diff --git a/composer.json b/composer.json
index 920f55a..1ce90b2 100644
--- a/composer.json
+++ b/composer.json
@@ -11,8 +11,10 @@
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         "doctrine/doctrine-migrations-bundle": "^3.3",
         "doctrine/orm": "^3.2",
+        "jbelien/oauth2-openstreetmap": "^0.1.2",
         "jmikola/geojson": "^1.0",
         "knplabs/knp-paginator-bundle": "^6.4",
+        "knpuniversity/oauth2-client-bundle": "^2.18",
         "league/commonmark": "^2.4",
         "league/html-to-markdown": "^5.1",
         "stof/doctrine-extensions-bundle": "^1.12",
diff --git a/composer.lock b/composer.lock
index c4a161d..bc4c9a3 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
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@@ -1655,6 +1655,379 @@
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+                    "homepage": "https://github.com/gmponos"
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+                    "homepage": "https://github.com/Nyholm"
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+                    "homepage": "https://github.com/sagikazarmark"
+                },
+                {
+                    "name": "Tobias Schultze",
+                    "email": "webmaster@tubo-world.de",
+                    "homepage": "https://github.com/Tobion"
+                },
+                {
+                    "name": "Márk Sági-Kazár",
+                    "email": "mark.sagikazar@gmail.com",
+                    "homepage": "https://sagikazarmark.hu"
+                }
+            ],
+            "description": "PSR-7 message implementation that also provides common utility methods",
+            "keywords": [
+                "http",
+                "message",
+                "psr-7",
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+                "source": "https://github.com/guzzle/psr7/tree/2.7.0"
+            },
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+                "url": "https://github.com/jbelien/oauth2-openstreetmap.git",
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+                "reference": "84c992990a317cdfcdfb41dbce548273a502ed44",
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+                "squizlabs/php_codesniffer": "^3.6"
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+                    "JBelien\\OAuth2\\Client\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "OpenStreetMap OAuth 2.0 support for the PHP League's OAuth 2.0 Client ",
+            "keywords": [
+                "OpenStreetMap",
+                "authorisation",
+                "authorization",
+                "client",
+                "oauth",
+                "oauth2",
+                "osm"
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+            "support": {
+                "issues": "https://github.com/jbelien/oauth2-openstreetmap/issues",
+                "source": "https://github.com/jbelien/oauth2-openstreetmap/tree/0.1.2"
+            },
+            "time": "2021-10-18T09:46:22+00:00"
+        },
+        {
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             "version": "1.2.0",
             "source": {
@@ -1875,6 +2248,66 @@
             "time": "2024-05-21T16:15:16+00:00"
         },
         {
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+            "version": "v2.18.1",
+            "source": {
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+                "url": "https://github.com/knpuniversity/oauth2-client-bundle.git",
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+                "reference": "1d59f49f164805b45f95f92cf743781bc2ba7d2b",
+                "shasum": ""
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+                "symfony/http-foundation": "^4.4|^5.0|^6.0|^7.0",
+                "symfony/routing": "^4.4|^5.0|^6.0|^7.0"
+            },
+            "require-dev": {
+                "league/oauth2-facebook": "^1.1|^2.0",
+                "phpstan/phpstan": "^1.0",
+                "symfony/phpunit-bridge": "^5.3.1|^6.0|^7.0",
+                "symfony/security-guard": "^4.4|^5.0|^6.0|^7.0",
+                "symfony/yaml": "^4.4|^5.0|^6.0|^7.0"
+            },
+            "suggest": {
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+            },
+            "type": "symfony-bundle",
+            "autoload": {
+                "psr-4": {
+                    "KnpU\\OAuth2ClientBundle\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
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+            "authors": [
+                {
+                    "name": "Ryan Weaver",
+                    "email": "ryan@symfonycasts.com"
+                }
+            ],
+            "description": "Integration with league/oauth2-client to provide services",
+            "homepage": "https://symfonycasts.com",
+            "keywords": [
+                "oauth",
+                "oauth2"
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+            "support": {
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+                "source": "https://github.com/knpuniversity/oauth2-client-bundle/tree/v2.18.1"
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+            "time": "2024-02-14T17:41:28+00:00"
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             "version": "2.4.2",
             "source": {
@@ -2152,6 +2585,76 @@
             "time": "2023-07-12T21:21:09+00:00"
         },
         {
+            "name": "league/oauth2-client",
+            "version": "2.7.0",
+            "source": {
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+                "url": "https://github.com/thephpleague/oauth2-client.git",
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+                "paragonie/random_compat": "^1 || ^2 || ^9.99",
+                "php": "^5.6 || ^7.0 || ^8.0"
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+            "extra": {
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+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
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+            "authors": [
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+                    "name": "Alex Bilbie",
+                    "email": "hello@alexbilbie.com",
+                    "homepage": "http://www.alexbilbie.com",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Woody Gilk",
+                    "homepage": "https://github.com/shadowhand",
+                    "role": "Contributor"
+                }
+            ],
+            "description": "OAuth 2.0 Client Library",
+            "keywords": [
+                "Authentication",
+                "SSO",
+                "authorization",
+                "identity",
+                "idp",
+                "oauth",
+                "oauth2",
+                "single sign on"
+            ],
+            "support": {
+                "issues": "https://github.com/thephpleague/oauth2-client/issues",
+                "source": "https://github.com/thephpleague/oauth2-client/tree/2.7.0"
+            },
+            "time": "2023-04-16T18:19:15+00:00"
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@@ -2300,6 +2803,56 @@
             "time": "2024-01-17T16:50:36+00:00"
         },
         {
+            "name": "paragonie/random_compat",
+            "version": "v9.99.100",
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+            "require": {
+                "php": ">= 7"
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+            "require-dev": {
+                "phpunit/phpunit": "4.*|5.*",
+                "vimeo/psalm": "^1"
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+            "suggest": {
+                "ext-libsodium": "Provides a modern crypto API that can be used to generate random bytes."
+            },
+            "type": "library",
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Paragon Initiative Enterprises",
+                    "email": "security@paragonie.com",
+                    "homepage": "https://paragonie.com"
+                }
+            ],
+            "description": "PHP 5.x polyfill for random_bytes() and random_int() from PHP 7",
+            "keywords": [
+                "csprng",
+                "polyfill",
+                "pseudorandom",
+                "random"
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+            "support": {
+                "email": "info@paragonie.com",
+                "issues": "https://github.com/paragonie/random_compat/issues",
+                "source": "https://github.com/paragonie/random_compat"
+            },
+            "time": "2020-10-15T08:29:30+00:00"
+        },
+        {
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             "version": "3.0.0",
             "source": {
@@ -2500,6 +3053,166 @@
             "time": "2019-01-08T18:20:26+00:00"
         },
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+            "version": "1.0.3",
+            "source": {
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+                "url": "https://github.com/php-fig/http-client.git",
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+            "dist": {
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+            },
+            "require": {
+                "php": "^7.0 || ^8.0",
+                "psr/http-message": "^1.0 || ^2.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Http\\Client\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "https://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interface for HTTP clients",
+            "homepage": "https://github.com/php-fig/http-client",
+            "keywords": [
+                "http",
+                "http-client",
+                "psr",
+                "psr-18"
+            ],
+            "support": {
+                "source": "https://github.com/php-fig/http-client"
+            },
+            "time": "2023-09-23T14:17:50+00:00"
+        },
+        {
+            "name": "psr/http-factory",
+            "version": "1.1.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/http-factory.git",
+                "reference": "2b4765fddfe3b508ac62f829e852b1501d3f6e8a"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/http-factory/zipball/2b4765fddfe3b508ac62f829e852b1501d3f6e8a",
+                "reference": "2b4765fddfe3b508ac62f829e852b1501d3f6e8a",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.1",
+                "psr/http-message": "^1.0 || ^2.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Http\\Message\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "https://www.php-fig.org/"
+                }
+            ],
+            "description": "PSR-17: Common interfaces for PSR-7 HTTP message factories",
+            "keywords": [
+                "factory",
+                "http",
+                "message",
+                "psr",
+                "psr-17",
+                "psr-7",
+                "request",
+                "response"
+            ],
+            "support": {
+                "source": "https://github.com/php-fig/http-factory"
+            },
+            "time": "2024-04-15T12:06:14+00:00"
+        },
+        {
+            "name": "psr/http-message",
+            "version": "2.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/http-message.git",
+                "reference": "402d35bcb92c70c026d1a6a9883f06b2ead23d71"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/http-message/zipball/402d35bcb92c70c026d1a6a9883f06b2ead23d71",
+                "reference": "402d35bcb92c70c026d1a6a9883f06b2ead23d71",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2 || ^8.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Http\\Message\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "https://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interface for HTTP messages",
+            "homepage": "https://github.com/php-fig/http-message",
+            "keywords": [
+                "http",
+                "http-message",
+                "psr",
+                "psr-7",
+                "request",
+                "response"
+            ],
+            "support": {
+                "source": "https://github.com/php-fig/http-message/tree/2.0"
+            },
+            "time": "2023-04-04T09:54:51+00:00"
+        },
+        {
             "name": "psr/log",
             "version": "3.0.0",
             "source": {
@@ -2550,6 +3263,50 @@
             "time": "2021-07-14T16:46:02+00:00"
         },
         {
+            "name": "ralouphie/getallheaders",
+            "version": "3.0.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/ralouphie/getallheaders.git",
+                "reference": "120b605dfeb996808c31b6477290a714d356e822"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/ralouphie/getallheaders/zipball/120b605dfeb996808c31b6477290a714d356e822",
+                "reference": "120b605dfeb996808c31b6477290a714d356e822",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.6"
+            },
+            "require-dev": {
+                "php-coveralls/php-coveralls": "^2.1",
+                "phpunit/phpunit": "^5 || ^6.5"
+            },
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "src/getallheaders.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Ralph Khattar",
+                    "email": "ralph.khattar@gmail.com"
+                }
+            ],
+            "description": "A polyfill for getallheaders.",
+            "support": {
+                "issues": "https://github.com/ralouphie/getallheaders/issues",
+                "source": "https://github.com/ralouphie/getallheaders/tree/develop"
+            },
+            "time": "2019-03-08T08:55:37+00:00"
+        },
+        {
             "name": "stof/doctrine-extensions-bundle",
             "version": "v1.12.0",
             "source": {
diff --git a/config/bundles.php b/config/bundles.php
index 92324a0..b5205ba 100644
--- a/config/bundles.php
+++ b/config/bundles.php
@@ -13,4 +13,5 @@ return [
     Symfony\UX\StimulusBundle\StimulusBundle::class => ['all' => true],
     Doctrine\Bundle\FixturesBundle\DoctrineFixturesBundle::class => ['dev' => true, 'test' => true],
     Knp\Bundle\PaginatorBundle\KnpPaginatorBundle::class => ['all' => true],
+    KnpU\OAuth2ClientBundle\KnpUOAuth2ClientBundle::class => ['all' => true],
 ];
diff --git a/config/packages/knpu_oauth2_client.yaml b/config/packages/knpu_oauth2_client.yaml
new file mode 100644
index 0000000..e3b2c61
--- /dev/null
+++ b/config/packages/knpu_oauth2_client.yaml
@@ -0,0 +1,8 @@
+knpu_oauth2_client:
+    clients:
+        openstreetmap:
+            type: generic
+            provider_class: '\JBelien\OAuth2\Client\Provider\OpenStreetMap'
+            client_id: 'KHvZSlcrLVpMSNuI-unXf0J8jfd-dzG4tq0KwYeLYng'
+            client_secret: '9he90L9ANzM7faW88olmYOF59Dd-rnduKEdG5518QNI'
+            redirect_route: 'app_osm_callback'
diff --git a/src/Controller/HomeController.php b/src/Controller/HomeController.php
index 6be707f..ce58eb8 100644
--- a/src/Controller/HomeController.php
+++ b/src/Controller/HomeController.php
@@ -2,10 +2,14 @@
 
 namespace App\Controller;
 
+use KnpU\OAuth2ClientBundle\Client\ClientRegistry;
+use League\OAuth2\Client\Provider\Exception\IdentityProviderException;
 use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\Routing\Attribute\Route;
 
+
 class HomeController extends AbstractController
 {
     #[Route('/', name: 'app_home')]
@@ -14,4 +18,34 @@ class HomeController extends AbstractController
         return $this->render('home/index.html.twig', [
         ]);
     }
+
+    #[Route('/osm/request', name: 'app_osm_request')]
+    public function osmRequest(ClientRegistry $clientRegistry): Response
+    {
+        return $clientRegistry
+            ->getClient('openstreetmap') 
+            ->redirect([
+                'read_prefs',
+            ]);
+    }
+
+    #[Route('/osm/callback', name: 'app_osm_callback')]
+    public function osmCallback(Request $request, ClientRegistry $clientRegistry): Response
+    {
+        $client = $clientRegistry->getClient('openstreetmap');
+
+        try {
+            $resourceOwner = $client->fetchUser();
+            dump(
+                $resourceOwner->getId(),
+                $resourceOwner->getDisplayName()
+            );
+            $this->addFlash('success', 'Authentification OSM réussie !');
+        } catch (IdentityProviderException $exception) {
+            $this->addFlash('success', 'Échec de l’authentification OSM !');
+        }
+
+        return $this->redirectToRoute('app_home');
+    }
+
 }
diff --git a/symfony.lock b/symfony.lock
index c13fb9e..74a9920 100644
--- a/symfony.lock
+++ b/symfony.lock
@@ -41,6 +41,18 @@
     "knplabs/knp-paginator-bundle": {
         "version": "v6.4.0"
     },
+    "knpuniversity/oauth2-client-bundle": {
+        "version": "2.18",
+        "recipe": {
+            "repo": "github.com/symfony/recipes-contrib",
+            "branch": "main",
+            "version": "1.20",
+            "ref": "1ff300d8c030f55c99219cc55050b97a695af3f6"
+        },
+        "files": [
+            "config/packages/knpu_oauth2_client.yaml"
+        ]
+    },
     "stof/doctrine-extensions-bundle": {
         "version": "1.12",
         "recipe": {
diff --git a/templates/home/index.html.twig b/templates/home/index.html.twig
index f0624ea..c3a5204 100644
--- a/templates/home/index.html.twig
+++ b/templates/home/index.html.twig
@@ -1,11 +1,9 @@
 {% extends 'base.html.twig' %}
 
-{% block main %}
-<div class="container">
-    <div class="row">
-        <div class="col">
-            ici la page d’accueil
-        </div>
+{% block page_content %}
+<div class="row">
+    <div class="col">
+        <a class="btn btn-primary" href="{{ path('app_osm_request') }}">S’authentifier avec OSM</a>
     </div>
 </div>
 {% endblock %}