Every Memobird device has its unique identifier called Device ID. The Device ID is needed when you're creating an applet on IFTTT. This Device ID is different from Memobird ID that is used to add friends.
Here's how to find your Device ID.
If your device is bonded to your account
If your device is NOT bonded to your account
Press Memobird's button twice, then a diagnostic report that contains the Device ID will be printed out.