Video surveillance in Portugal: what you should know (privacy and practical rules)
Note: This is general guidance and does not replace legal advice.
Rule #1: Film "only what's necessary"
The logic behind GDPR is to minimize : it only records what is necessary for the purpose (security) and avoids unnecessary zones.
If the camera actually captures part of a public space, it may cease to be considered "domestic use" and fall under the scope of the GDPR.
Avoid public roads and neighboring properties (good practice)
Reference guides in Portugal emphasize that cameras should only cover the security perimeter and not capture images of public roads or neighboring properties .
How long should I save images for?
It is common to refer to a 30-day period followed by disposal (e.g., destroy within the next 48 hours).
Video surveillance notice (visible information)
There are legal frameworks that require information to be displayed in a highly visible location regarding the existence/location, purpose, and person responsible for the data processing.
Digital security (to avoid problems)
Use strong passwords and avoid "universal" credentials; this is a basic recommendation for consumer IoT.
FAQ
If the camera captures a small part of the street, is that a problem?
It could be — if you record in public spaces, it may cease to be considered "domestic activity" and require GDPR safeguards (minimizing area, masking zones).
Can I save recordings "as a precaution" for many months?
A common rule of thumb is to limit it to 30 days , except in specific cases where there is a need.