I thought I might share my story so that people will be on guard if the same situation occurs with them. This guy comes to my house, dressed in standard corporate on-site gear, baby blue polo shirt tucked into khakis. He said that he was sent by GE in regards to "this," after which he tapped the sign on my lawn denoting that we have a home security system. He then claimed that he had to install a part on my home security system to update it or something, and asked if he could come inside. I told him that I wasn't the homeowner (my parent's house) and that I knew nothing about anything because I had just returned home from studying abroad for a year. He asked a few more questions, I disavowed any knowledge and he eventually left. The reason I knew it was a scam from the get-go: we don't have a home security system. The sign on our lawn is a fake, only meant to deter those who might be entertaining the idea of burglarizing my parent's house. There's no way he could have been sent by anyone, because we wouldn't have been in any company's records as having a security system. I'm guessing he was just scoping out the neighborhood to figure out which houses had security systems, and once inside, to sabotage those systems and/or determine whether there was anything inside the house worth stealing. I have no idea whether this is a widespread method of house-burglarizing, but I just wanted to warn people to be careful about these things.