diff --git a/web/utils/device-uuid.js b/web/utils/device-uuid.js
new file mode 100644
--- /dev/null
+++ b/web/utils/device-uuid.js
@@ -0,0 +1,24 @@
+// @flow
+import crypto from 'crypto';
+
+export const deviceUUIDTypes = Object.freeze({
+  KEYSERVER: 0,
+  WEB: 1,
+  MOBILE: 2,
+});
+export type DeviceUUIDType = $Values<typeof deviceUUIDTypes>;
+
+function getDeviceUUID(type: DeviceUUIDType): string {
+  const uuidSuffix = crypto.randomBytes(32).toString('hex');
+
+  if (type === deviceUUIDTypes.KEYSERVER) {
+    return `ks-${uuidSuffix}`;
+  } else if (type === deviceUUIDTypes.WEB) {
+    return `web-${uuidSuffix}`;
+  } else if (type === deviceUUIDTypes.MOBILE) {
+    return `mobile-${uuidSuffix}`;
+  }
+  return '';
+}
+
+export { getDeviceUUID };