What is One-Time Password (OTP)?

for Google Workspace / for Microsoft 365

Question:

What is One-Time Password (OTP)?

Answer:

OTP (One Time Password) is a password which has very short Validity period.

OTP for access control is TOTP (Time-based One Time Password) which varies with time, generates different value automatically every 30 seconds, and its validity period is a maximum of 1 minutes 30 seconds.

Thus, users are required to enter not only user name / password but also OTP in order to log in.

Additionally, about OTP issuing method, please refer to the document below.