Corrected entry: After Flynn Sr.'s identity disc is stolen off his back AND then shown in Clu's transport (he has not stolen it back yet), we get a scene lasting several minutes between Flynn Sr., his son, and Quorra, where Flynn Sr. is standing with his back to the camera and his disc - which is supposed to be gone - is still there. When Quorra's disc is off, it is missing, and we do not hear anything about Flynn Sr. being able to spawn a new disc.
Sereenie
31st Dec 2010
Correction: That's not Flynn's disc: it's Quorra's. Transporting it that way leaves both his hands free.
Sereenie