Never sign-up or send your ID to website above, I don't trust for it, due there's no information about office residence or more valid lisence for the company.
THe funny things if you read the FAQ : you'll get some trolll :
How to send other users to jail?
The app gives you a unique opportunity to send other users to jail for one day for EUR 1. In order to do that, simply click on user`s avatar and then click on Send to jail. However, the potential detainee need to have an active account with Dukascopy Bank.