diff --git a/services/hexathons/src/routes/interaction.ts b/services/hexathons/src/routes/interaction.ts
index b91aab9..82c9218 100644
--- a/services/hexathons/src/routes/interaction.ts
+++ b/services/hexathons/src/routes/interaction.ts
@@ -1,4 +1,5 @@
-import { asyncHandler, BadRequestError, checkAbility, ConfigError } from "@api/common";
+import { asyncHandler, BadRequestError, checkAbility, ConfigError, apiCall } from "@api/common";
+import { Service } from "@api/config";
 import express from "express";
 import { FilterQuery } from "mongoose";
 
@@ -44,6 +45,10 @@ interactionRoutes.route("/").post(
       throw new BadRequestError("Only members can create event interactions");
     }
 
+    if (!req.user?.roles.member && req.body.type === InteractionType.CHECK_IN) {
+      throw new BadRequestError("Only members can create check-in interactions");
+    }
+
     // For event or scavenger hunt interactions, the identifier is required and must be unique
     if ([InteractionType.EVENT, InteractionType.SCAVENGER_HUNT].includes(req.body.type)) {
       const existingInteraction = await InteractionModel.findOne({
@@ -105,6 +110,52 @@ interactionRoutes.route("/").post(
       });
     }
 
+    // If this is a check-in interaction, update the application status to CHECKED_IN
+    if (req.body.type === InteractionType.CHECK_IN) {
+      try {
+        // Find the user's application for this hexathon
+        const applicationsResponse = await apiCall(
+          Service.REGISTRATION,
+          {
+            method: "GET",
+            url: "/applications",
+            params: {
+              hexathon: req.body.hexathon,
+              userId: req.body.userId,
+            },
+          },
+          req
+        );
+
+        if (applicationsResponse.applications && applicationsResponse.applications.length > 0) {
+          const application = applicationsResponse.applications[0];
+
+          // Update the application status to CHECKED_IN
+          await apiCall(
+            Service.REGISTRATION,
+            {
+              method: "POST",
+              url: `/applications/${application._id}/actions/update-status`,
+              data: {
+                status: "CHECKED_IN",
+              },
+            },
+            req
+          );
+        } else {
+          console.warn(
+            `User ${req.body.userId} checked in but no application found for hexathon ${req.body.hexathon}`
+          );
+        }
+      } catch (error) {
+        console.error(
+          "Failed to update application status for user %s check-in:",
+          req.body.userId,
+          error
+        );
+      }
+    }
+
     return res.send(interaction);
   })
 );
diff --git a/services/registration/src/models/application.ts b/services/registration/src/models/application.ts
index f41cd73..01c9bdb 100644
--- a/services/registration/src/models/application.ts
+++ b/services/registration/src/models/application.ts
@@ -13,6 +13,7 @@ export enum StatusType {
   CONFIRMED = "CONFIRMED",
   DENIED = "DENIED",
   NOT_ATTENDING = "NOT_ATTENDING",
+  CHECKED_IN = "CHECKED_IN",
 }
 
 export interface Essay extends Types.Subdocument {
diff --git a/services/registration/src/routes/application.ts b/services/registration/src/routes/application.ts
index eafe2d6..aeebb26 100644
--- a/services/registration/src/routes/application.ts
+++ b/services/registration/src/routes/application.ts
@@ -794,3 +794,20 @@ applicationRouter.route("/slack/confirmed-users").get(
     });
   })
 );
+
+applicationRouter.route("/:id/check-in-status").get(
+  checkAbility("read", "Application"),
+  asyncHandler(async (req, res) => {
+    const application = await ApplicationModel.findById(req.params.id).accessibleBy(req.ability);
+
+    if (!application) {
+      throw new BadRequestError("Application not found or you do not have permission to access.");
+    }
+
+    const isCheckedInByStatus = application.status === StatusType.CHECKED_IN;
+
+    return res.status(200).json({
+      isCheckedIn: isCheckedInByStatus,
+    });
+  })
+);
diff --git a/services/registration/src/routes/statistics.ts b/services/registration/src/routes/statistics.ts
index 045dc1b..148ca4d 100644
--- a/services/registration/src/routes/statistics.ts
+++ b/services/registration/src/routes/statistics.ts
@@ -281,11 +281,13 @@ statisticsRouter.route("/").get(
       acceptedUsers:
         (allUsersStatusCount.ACCEPTED || 0) +
         (allUsersStatusCount.CONFIRMED || 0) +
+        (allUsersStatusCount.CHECKED_IN || 0) +
         (allUsersStatusCount.NOT_ATTENDING || 0),
       confirmedUsers: allUsersStatusCount.CONFIRMED || 0,
       waitlistedUsers: allUsersStatusCount.WAITLISTED || 0,
       withdrawnUsers: allUsersStatusCount.NOT_ATTENDING || 0,
-      checkedinUsers: checkinInteractions,
+      checkedinUsers: checkinInteractions, // Physical check-in interactions
+      checkedInStatusUsers: allUsersStatusCount.CHECKED_IN || 0, // Application status count
       deniedUsers: allUsersStatusCount.DENIED || 0,
     };