Try it and let me know it's worked mate or I'll be getting paranoid.

My mate just messaged me yesterday and said he'd put my ticket in his wallet (after I had put it in mine) and to put his in mine as well.

I was convinced when I checked my wallet that it will have disappeared out of mine coz of this 1 device only stuff but it hadn't so I went on the email with the 2 activations on and clicked on his and downloaded it to mine so now we've both got both tickets on our phones*.

*awaits efc security to dawn raid the house and nick us.