# Authentication & Account password

<div id="bkmrk-isr-coimbra-has-a-ce" style="text-align: justify;">ISR Coimbra has a centralized authentication system, that is, a unique identification system, which allows all its users to access the various informed services, using the same authentication credentials - the same username and password.</div><div id="bkmrk-" style="text-align: justify;"></div><div id="bkmrk-given-the-degree-of-" style="text-align: justify;">Given the degree of criticality of this keyword, which allows access to multiple computer services, were used according to the following rules:</div>- A keyword must have at least eight characters and three different variants (uppercase, lowercase, numbers and punctuation);
- The password must be renewed periodically by the user.

<div id="bkmrk-you-can-change-your-" style="text-align: justify;">You can change your password at [https://password.isr.uc.pt](https://password.isr.uc.pt/)</div>