diff --git a/src/GameServer.spec.ts b/src/GameServer.spec.ts
index 7e98dc5..fa84683 100644
--- a/src/GameServer.spec.ts
+++ b/src/GameServer.spec.ts
@@ -268,3 +268,27 @@
         });
     });
 });
+
+describe("Scenario: Retrieving user id", function(){
+    const games = createGameServer();
+    describe("When a user id is returned", function(){
+        const userID = games.createNewUserID();
+        it("then it should not be null", function(){
+            expect(userID).to.not.be.null;
+        });
+        it("then it should be a string", function(){
+            expect(typeof userID).to.equal("string");
+        });
+        it("then it should not be empty", function(){
+            expect(userID).to.not.equal("");
+        });
+    });
+
+    describe("When two user ids are issued", function(){
+        const id1 = games.createNewUserID();
+        const id2 = games.createNewUserID();
+        it("then they must not be the same", function(){
+            expect(id1).to.not.equal(id2);
+        });
+    });
+});

diff --git a/src/GameServer.spec.ts b/src/GameServer.spec.ts
index 7e98dc5..fa84683 100644
--- a/src/GameServer.spec.ts
+++ b/src/GameServer.spec.ts
@@ -268,3 +268,27 @@
         });
     });
 });
+
+describe("Scenario: Retrieving user id", function(){
+    const games = createGameServer();
+    describe("When a user id is returned", function(){
+        const userID = games.createNewUserID();
+        it("then it should not be null", function(){
+            expect(userID).to.not.be.null;
+        });
+        it("then it should be a string", function(){
+            expect(typeof userID).to.equal("string");
+        });
+        it("then it should not be empty", function(){
+            expect(userID).to.not.equal("");
+        });
+    });
+
+    describe("When two user ids are issued", function(){
+        const id1 = games.createNewUserID();
+        const id2 = games.createNewUserID();
+        it("then they must not be the same", function(){
+            expect(id1).to.not.equal(id2);
+        });
+    });
+});
diff --git a/src/GameServer.ts b/src/GameServer.ts
index 03753ad..2ac8736 100644
--- a/src/GameServer.ts
+++ b/src/GameServer.ts
@@ -25,6 +25,11 @@
     // that the server contains only valid maps.
     private mapList: MazeMap[];
     private states: GameState[];
+    /**
+     * Keeps track of generated random characters to ensure,
+     * that no two consecutive generated characters are the same.
+     */
+    private randomCharacter: string;
 
     constructor()
     {
@@ -139,6 +144,14 @@
         return this.mapList.map(m => m.id);
     }
 
+    public createNewUserID(): string
+    {
+        let id = (+new Date()).toString(36);
+        // two prevent equal ids, at the same millisecond, append a random character.
+        id += this.getRandomCharacter();
+        return id;
+    }
+
     /**
      * Makes sure, that a userID is acceptable.
      * If not throw the appropriate error.
@@ -153,4 +166,24 @@
             throw new Error("UserID must not be empty.");
         }
     }
+
+    /**
+     * Produces a single alphanumeric character,
+     * while ensuring, that no two consecutive outputs are the same.
+     */
+    private getRandomCharacter(): string
+    {
+        const possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+
+        let newChar: string;
+        newChar = possible.charAt(Math.floor(Math.random() * possible.length));
+
+        while(this.randomCharacter === newChar)
+        {
+            newChar = possible.charAt(Math.floor(Math.random() * possible.length));
+        }
+        this.randomCharacter = newChar;
+
+        return newChar;
+    }
 }

diff --git a/src/GameServer.spec.ts b/src/GameServer.spec.ts
index 7e98dc5..fa84683 100644
--- a/src/GameServer.spec.ts
+++ b/src/GameServer.spec.ts
@@ -268,3 +268,27 @@
         });
     });
 });
+
+describe("Scenario: Retrieving user id", function(){
+    const games = createGameServer();
+    describe("When a user id is returned", function(){
+        const userID = games.createNewUserID();
+        it("then it should not be null", function(){
+            expect(userID).to.not.be.null;
+        });
+        it("then it should be a string", function(){
+            expect(typeof userID).to.equal("string");
+        });
+        it("then it should not be empty", function(){
+            expect(userID).to.not.equal("");
+        });
+    });
+
+    describe("When two user ids are issued", function(){
+        const id1 = games.createNewUserID();
+        const id2 = games.createNewUserID();
+        it("then they must not be the same", function(){
+            expect(id1).to.not.equal(id2);
+        });
+    });
+});
diff --git a/src/GameServer.ts b/src/GameServer.ts
index 03753ad..2ac8736 100644
--- a/src/GameServer.ts
+++ b/src/GameServer.ts
@@ -25,6 +25,11 @@
     // that the server contains only valid maps.
     private mapList: MazeMap[];
     private states: GameState[];
+    /**
+     * Keeps track of generated random characters to ensure,
+     * that no two consecutive generated characters are the same.
+     */
+    private randomCharacter: string;
 
     constructor()
     {
@@ -139,6 +144,14 @@
         return this.mapList.map(m => m.id);
     }
 
+    public createNewUserID(): string
+    {
+        let id = (+new Date()).toString(36);
+        // two prevent equal ids, at the same millisecond, append a random character.
+        id += this.getRandomCharacter();
+        return id;
+    }
+
     /**
      * Makes sure, that a userID is acceptable.
      * If not throw the appropriate error.
@@ -153,4 +166,24 @@
             throw new Error("UserID must not be empty.");
         }
     }
+
+    /**
+     * Produces a single alphanumeric character,
+     * while ensuring, that no two consecutive outputs are the same.
+     */
+    private getRandomCharacter(): string
+    {
+        const possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+
+        let newChar: string;
+        newChar = possible.charAt(Math.floor(Math.random() * possible.length));
+
+        while(this.randomCharacter === newChar)
+        {
+            newChar = possible.charAt(Math.floor(Math.random() * possible.length));
+        }
+        this.randomCharacter = newChar;
+
+        return newChar;
+    }
 }
diff --git a/src/LabyrinthMiddleware.ts b/src/LabyrinthMiddleware.ts
index db93e45..ebc582d 100644
--- a/src/LabyrinthMiddleware.ts
+++ b/src/LabyrinthMiddleware.ts
@@ -34,6 +34,9 @@
 
         "Lists currently available maps."
         listMaps: [String!]!
+
+        "Generates a new unique user id."
+        createNewUserID: String!
     }
 `;
 
@@ -63,6 +66,7 @@
 function createGraphQLRoot(games:GameServer)
 {
     return {
+        createNewUserID: () => games.createNewUserID(),
         currentPostition: ({userID}) => new MazeTileQL(games.currentPosition(userID)),
         endGame: ({userID}) => games.endGame(userID),
         listMaps: () => games.listMaps(),