a wonderful use of technology
Thursday, 9 May 2013 08:50 am![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
miriam_ehttp://www.upworthy.com/watch-an-abused-child-get-a-secret-help-message-in-broad-daylight-that-his-abuser-cant-see
Lenticular optical systems have been around for a long time, usually for animated images or stereo, but I've never seen them used for such a cool social purpose. I hope this spreads around the world.
Lenticular optical systems have been around for a long time, usually for animated images or stereo, but I've never seen them used for such a cool social purpose. I hope this spreads around the world.