what type of one-time password (otp) changes after a set time period
One-time password A time-synchronized OTP is usually related to a piece of hardware called a security token (e.g., each user is given a personal token that generates a one-time password). It might look like a small calculator or a keychain charm, with an LCD that shows a number that changes occasionally. Inside the token is an accurate clock that has been synchronized with the clock on the proprietary authentication server. On these OTP systems, time is an important part of the password algorithm, since the generation of new passwords is based on the current time rather than, or in addition to, the previous password or a secret key. This token may be a proprietary device, or a mobile phone or similar mobile device which runs software that is proprietary, freeware, or open-source. An example of time-synchronized OTP standard is Time-based One-time Password Algorithm (TOTP).
Once Upon a Time (season 1) When Henry is pronounced dead, Emma and Regina return to the Hospital to say goodbye to his body. Emma kisses him on the forehead, causing a pulse of energy to engulf the entire town and restore everyone's true memories while freeing Henry from the effects of the poisoned apple. Snow and Charming reunite with each other and Regina returns to her mansion alone as Emma begins to wonder why no one is returning to the Other World since the curse is broken. Rumplestiltskin reunites with his true love Belle (Emilie de Ravin) and takes her to a Wishing Well deep in the heart of the forest, a well with the power to restore that which one had lost. He takes the potion and drops it into the well, causing a purple cloud to emerge and consume Storybrooke as the Clock Tower strikes 8:15.