Sounds more effective than mine. I set an infinite loop to check for motion every second and if no motion is detected for 600 seconds the display goes to sleep.

@phrazelle The idea behind it is so that when the HDMI is disabled you would get the no signal. You then set up the TV/Monitor to go to sleep if no signal is found.
Check your TV manual for power saving settings.

I used this in the UK.

http://www.cutplasticsheeting.co.uk/mirrored-sheeting/two-way-acrylic-mirror

I would recommend making sure you have the right size as it isn’t easy to cut yourself.

I have been looking for something similar. Linked up with SpotifyUI but not had much time to test it out.

Well done Mich! And to all the contributors too!

Link it up with a PIR sensor with some bluetooth speakers and you could give someone a nasty fright!!

The setup I have is for the monitor to go to sleep if no signal is found.
I believe you should be able to find the same kind of settings on your TV.

Dont get a straight VGA to HDMI cable because it wouldnt work. You would need convertor which is a bit larger than you would expect and often need to be powered.

And has that resolved the icon problem?

Looking forward to the end product.