one time password , otp token (kingkey2000)
Category: Communications PC Cards
OTP TOKEN-KingKey 2000
1,size:5.5cm*2.5cm*0.9cm
2,Time-based or Event-based;
3,Time-based: 60seconds/30seconds/20seconds renew one OTP
4,Waterproof is good, can be put on the glasses in 10 minutes ...