This service is for us to replicate your NFC card or provide you with new cards for your Nanrobot Scooter. The way it works is you place the order and then mail us your display, with or without the original key (you'd be responsible for the shipping costs to us) We will then replicate your key and bind it to your display (or provide new keys) and mail it back to you. The cost includes the service, 1 new aftermarket cards or OEM keys and return postage back to you. If your screen doesn't work we wouldnt be able to do it because we need to make sure that the screen and the new cards work perfectly. The turn around time is 1 business day. For original OEM NR keys its an additonal 10 dollars. You can only have 2 keys binded to the screen.