User talk:Mr nerdy

August 2016
Hello, I'm FoCuSandLeArN. I noticed that you made a change to an article, Retinal scan, but you didn't provide a source. I’ve removed it for now, but if you’d like to include a citation to a reliable source and re-add it, please do so! If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks. FoCuS contribs ;  talk to me!  23:36, 18 August 2016 (UTC)