diff --git a/db-models/captcha.js b/db-models/captcha.js
deleted file mode 100644
index bc65ae88..00000000
--- a/db-models/captcha.js
+++ /dev/null
@@ -1,27 +0,0 @@
-
-'use strict';
-
-const Mongo = require(__dirname+'/../helpers/db.js')
-	, db = Mongo.client.db('captcha');
-
-module.exports = {
-
-	db,
-
-	findOne: async (name) => {
-		return db.collection('captcha').findOne({ '_id': name });
-	},
-
-	insertOne: async (data) => {
-		return db.collection('captcha').insertOne(data);
-	},
-
-	deleteOne: async (data) => {
-		return db.collection('captcha').deleteOne(data);
-	},
-
-	deleteAll: async () => {
-		return db.collection('captcha').deleteMany({});
-	},
-
-}
diff --git a/db-models/trips.js b/db-models/trips.js
new file mode 100644
index 00000000..81b981a8
--- /dev/null
+++ b/db-models/trips.js
@@ -0,0 +1,21 @@
+
+'use strict';
+
+const Mongo = require(__dirname+'/../helpers/db.js')
+	, db = Mongo.client.db('tripcodes').collection('tripcodes');
+
+module.exports = {
+
+	findOne: (password) => {
+		return db.findOne({ '_id': password });
+	},
+
+	insertOne: (password, trip) => {
+		return db.insertOne({ '_id': password, 'code': trip });
+	},
+
+	deleteAll: () => {
+		return db.deleteMany({});
+	},
+
+}
diff --git a/helpers/id-contrast.js b/helpers/id-contrast.js
new file mode 100644
index 00000000..50232bbb
--- /dev/null
+++ b/helpers/id-contrast.js
@@ -0,0 +1,8 @@
+'use strict';
+
+module.exports = (hex) => {
+	const r = parseInt(hex.substr(0,2), 16);
+	const g = parseInt(hex.substr(2,2), 16);
+	const b = parseInt(hex.substr(4,2), 16)
+	return 0.375  * r + 0.5 * g + 0.125 * b;
+}
diff --git a/helpers/tripcode.js b/helpers/tripcode.js
new file mode 100644
index 00000000..f7736f5c
--- /dev/null
+++ b/helpers/tripcode.js
@@ -0,0 +1,19 @@
+'use strict';
+
+const Tripcodes = require(__dirname+'/../db-models/trips.js')
+	, crypto = require('crypto');
+
+module.exports = async (password) => {
+
+	//return existing trip if exists
+	let existing = await Tripcodes.findOne(password);
+	if (existing) {
+		return existing.code;
+	}
+
+	//same as lynxchan does it, but i dont think this is secure. welcome to change.
+	const trip = crypto.createHash('sha256').update(password + Math.random()).digest('base64').substring(0, 6);
+	await Tripcodes.insertOne(password, trip);
+	return trip;
+
+}