HOTP

HOTP is a one-time code based on a shared counter rather than time.

What is HOTP?

HOTP is a one-time code based on a shared counter rather than time. It is part of the practical vocabulary used by administrators, developers and IT teams. Understanding it helps identify where the technology sits in an architecture and what problem it is intended to solve.

What is it used for?

It is mainly used to tokens or MFA systems that use an event counter. In production, its usefulness depends on the surrounding configuration, compatibility requirements and operational constraints.

How to recognize it in practice

You may encounter HOTP in product interfaces, configuration files, logs, API documentation, network diagrams or troubleshooting procedures. Always check the context before changing a setting based only on its name.

Points to watch

Counter desynchronization can prevent authentication. Test changes, document the previous state and keep a rollback path for production systems.

In short

HOTP = a one-time code based on a shared counter rather than time. Its main value is to tokens or MFA systems that use an event counter.