The Text Telepathy Test in UK

Can you tell who’s texting you? To do this test, you need the help of three people you know well. Please make sure that they are ready and willing to take part, and let them know when the test is due to start. First you need to register, as explained below. Then the test starts with the system selecting one of your contacts at random and sending that person a message, asking him/her to text you by replying to the message. When the system receives the contact’s message, it sends you a text asking you to feel who the message is from. You send your guess to the system, and then receive the message.

After a random time interval, usually about 5 to 10 minutes, the system selects a contact at random again, and the process is repeated. (It could be the same person who was selected before). If one of your contacts cannot respond immediately, this does not matter. After 9 trials have been completed the test is over, and the system texts you to tell you your score. By chance guessing alone, your hit rate would be 3 out of 9.

You can read more and register here.