0:45 play_arrow Infrared cuff button scanning camera Gssalemarkedcards visibility 3 schedule 10年前 favorite
0:45 play_arrow Infrared scanning system on the T-shirt Gssalemarkedcards visibility 1 schedule 10年前 favorite
0:40 play_arrow Scanning system for normal marked cards Gssalemarkedcards visibility 7 schedule 10年前 favorite