Regarding Copyright issues: I'm not a lawyer, but from what I've read from both US and European sources, if you take a picture of something, you hold the copyright to the picture, and no one else. There are only two limitations: a) the owner of the premises where you stand while taking the picture can tell you not to take any pictures and b) if you take pictures of any people they have to consent before you publish the picture. In some countries there are particular laws concerning publically displayed works of art (e.g. statues in the street) but I haven't heard of something like that in the US, and a sticker in a piece of electric equipment can hardly be considered artwork.
