Yes, multiple accounts per household are allowed. However, only one person per household can take part in any single study. This keeps studies fair and secure for everyone.
What counts as a household?
A household is anyone who shares your IP address with you. This includes people at home, at work, or at school with you if the IP address is shared.
What happens if two people in the same household try to join the same study?
We use a system that recognizes when participants share an IP address, so only one person per household can access a given study at a time. If someone in your household joins a study first, you won't be able to join that same study, but you can still take part in any study neither of you has completed yet.
Here's an example:
Person A and person B share a household.
Person A joins study X.
Person B becomes ineligible for study X, but can take part in any study person A hasn't completed, and the same goes the other way around.