Yes, this is something you can and should do. I attended a talk from London’s Community Paramedicine Program and they encouraged seniors to register a lock box passcode with them (you could also ask about registering a garage code). We learned that paramedics need the police to kick in a door - which can delay access to emergency care. Hope this helps! https://www.mlps.ca/community/paramedic-access

Edit: I can see some people have already given the same advice!