OW.NET -- 1-Wire API port from Java (and J#) to C#. Use the Dallas 1-Wire and iButton chips with standard C# using a serial adapter (also CF.net) or the TMEX drivers on the Windows platform. No J# distribution installation required.
The ASP CAPTCHA Project (ASP Implementation of CAPTCHA) CAPTCHA is an acronym for "Completely Automated Public Turing Test to Tell Computers & Humans Apart". It can generate & grade tests that: Most humans can pass Current computer programs can't