Time-based one-time password demonstration
otpauth://totp/{{issuer}}:{{account_name}}?secret={{key_with_base32_format}}&issuer={{issuer}}&algorithm={{algorithm}}&digits={{digits}}&period={{period}}
- algorithm: SHA-1
- issuer: Provider
- account_name: Email
- digits: Numer of digit [6,8]. default: 6
- period: Period in second, default: 30