What do you need to register?
Only an email adress where you can get messages.
How many items can I create?
By now you can create as many items as you want.
What does the finder see?
Only the description you wrote for the item and a box to send you a message. The item name stays private, and your name and email address are never shown. Anyone who scans the tag can read the description, so don't put your address or other private details in it.
Can I answer the finder?
Not through Retag@. Messages travel one way, from the finder to your inbox. If the finder left a phone number or email, you contact them directly.
What size should I print the label?
Around 2.5 cm works on a wallet or a key fob, 5 cm on a bag or a case. You set the exact millimetres in the label tool.