You do not need to provide any personal information to signup for a TwinMe account.
Go to the website to Download and install TwinMe from the iOS or Google App store.
Once installed, run the app and choose "Next" twice, then choose any name and a picture for your profile. You can connect with other TwinMe users by touching the "Add a new contact" button and sending them a link using the "Social" option or by scanning their QR code using the "In-person" option.
If you have any questions there are FAQs on the TwinMe website