Don't let any person you don't completely know into your house. Even if this medical id cards stranger has a believable story or is trying to sell you something, do not let them in. Some people may simply be trying to determine whether or not you have a home security installed; if you don't, they may plan to return later if you are away from your home.
Regardless of the quality of your home security system, you need to have it checked each year. Get someone from the security firm to inspect it. Many factors cause issues with security systems like nature and wild animals. If the problem cannot be seen, you pro