Lifehacker - Motion Detection Is an Effective, Dead Simple Security Camera App - Featured Windows Download
http://lifehacker.com/5233052/motion-detection-is-an-effective-dead-simple-security-camera-app

Motion Detection is a free application that turns your webcam into a motion-sensing security camera in just a few clicks.

Windows only: Motion Detection is a free application that turns your webcam into a motion-sensing security camera in just a few clicks.

Face detection in pure PHP (without OpenCV)

Detecção de faces utilizando javascript

Script permettant de faire de la détection faciale à l'aide de javascript.

Lists IP, browser version and details, and browser support for latest features

awesome photo manipulation detection discussion

Discussion of photoshopping of women's bodies

interesting analysis of a badly photoshopped image, showing techniques for detection of photo manipulation

browser detection with php

A more elaborate way of dealing with css browser inconsistencies using a little PHP magic.

ipad detection

Serviço de face detection com API bem bacana. Vc faz um pedido via API com o endereço da imagem e ele te retorna um JSON com as faces detectadas.

face.comが顔認識のAPIを公開。

Appendix A: All-In-One Almost-Alphabetical No-Bullshit Guide to Detecting Everything

If you want the guts of how Modernizr HTML5 CSS3 feature detection works...