We tried it and while it does help to filter out completely clueless people, however cheating <i>is</i> a real problem. This clearly depends on the industry and specifics of the position, but out of three people that hired, two clearly cheated on the remote coding test. This was for a C position in embedded context, and one would think that no one in their sane mind would cheat, and still many people did.<p>So, yeah, good idea, but use with caution as YMMV.