system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do websites sometimes remember my password, and sometimes not, even after checking the "remember me" box?
gpt
Most "remember me" boxes rely upon cookies by storing strings of non-sensitive data to check against their records (database.) If you block or remove cookies this will have an impact on if the "remember me" box works. Also depending on how a "remember me" box is coded, sometimes they may not function well or as expected and will discard the "remember me" information anyways; especially in a world with a wide variety of browsers and platforms that don't always play well with each other.