Yes,all good points. Many vanilla javascript scripts are available to get this TOTP. The service provider can increase this 30 seconds (technically not, they ju

Yes,all good points. Many vanilla javascript scripts are available to get this TOTP. The service provider can increase this 30 seconds (technically not, they just accept any 1 current time token = 30 seconds, any 3 token, 1 past, 1 current, 1 next = 90 seconds, and any number of past present tokens) to any multiple of 30 seconds. My personal scripts use 3 minutes.