Re: IR detection Yeah.  It is a material that will illuminate when a IR source shines a beam on it. --                                                             Ray Dovi Poznanski  wrote in message news:3837E5F9.517BC7E@zoot.tau.ac.il... hey does anybody know how an IR sensor card works? -- Dovi Poznanski dovip@post.tau.ac.il 22 Israel's st. Tel Aviv tel: 03 5229643