Phone numbers? – Tine Tag: Interactive sticker Review

Hi, this app seems like it is going to be really neat to use. I can't wait until I get the tags in. It'll come in handy for birthday gifts for my nieces. I do have a concern though.. Can people get your phone number off the app? If so, is there a way you can hide your number?? Thanks.
Review by Trix_May27 on Tine Tag: Interactive sticker.