Unlock your phone without unlocking... your phone...

Strange title I know, but this is exactly what SIMable does.

SIMable is an ultra thin chip, that is being attached to a real SIM card, and can somehow fool your phone into thinking that it's unlocked...

According to Mr. Mobile: "Whilst mobile phone unlocking is not illegal, it will in most cases invalidate the handset's warranty. SIMable requires no handset interference and thus theoretically the full manufacturer's guarantee remains intact".
Can I have a SIM card that can fool my Treo into thinking it's the new Samsung Omnia?
(check out the list of SIMable's supported devices in here)