Augmented Reality Via Cellphones

With the emmergence of cameras embedded cellphones, augmented reality is democratizing. Michael Rohs from the Distributed Systems Group at the ETHZ presented us last Thursday his Entry Points into a Smart Campus Environment which is part of the ETH World initiative at ETH Zurich. In Rohs’ project, ETHOC bar codes are entry points that give the opportunity to interact with the virtual campus (ETH World) from the physical campus. Cellphones equipped with a camera and a visual code recognition software can decrypte the code. The ETHOC portal is used for the creation of virtual counterparts for printed material.

The same day, Dan Gillmor wrote on Real-World Hyperlinks Via Mobile Phone and mentionned Semacode another applicatio which creates a gate between the real world and virtual world of the Internet.

Access and Mobility of Wireless PDA Users

A paper Marvin McNett and Geoffrey M. Voelker on the use of PDA at the University of California San Diego “Access and Mobility of Wireless PDA Users“. A few quotes:
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CraftStumbler2

CraftStumbler2 my Pocket PC utility for 802.11b based wireless network auditing is running. It is based on CraftDeamon a C++ DLL which calls NDIS functions on the IEEE 802.11 NIC and returns the detected BSSIDs and their attributes stored in the IEEE 802.11 NIC’s database. CraftDeamon’s methods are exported to be invoked by CraftStumbler (C# client) which displays the access points’ MAC addresses and signal strength and if selected redirects the data to a remote server (Java) which logs them on a centralized database.

Writing Mobile Games Using the Microsoft .NET Compact Framework

Writing Mobile Games Using the Microsoft .NET Compact Framework describes how I should develop the CatchBob! (part of the Location Matters research project) user interface. Full Screen Game Form, Overriding OnPaint and OnPaintBackground, and Off Screen Bitmap Technique For Painting techniques will be usefull.

Creating Custom Controls for the .NET Compact Framework

Among many considerations and differences in developping for .NET Framework or .NET Compact Framework, creating controls for the Compact world has some tricks to be aware of. Some articles try to explain it:

- Creating Custom Controls for the .NET Compact Framework
- How to Create a Microsoft .NET Compact Framework-based Image Button
- Color Button for the .NET Compact Framework

Using Win32 and Other Libraries

Another article which gives overview on the different ways of using existing code from within C#: Using Win32 and Other Libraries

The Complete Guide to C++ Strings

I finally could find a good guide that outline the purpose of each string type in C++ (The Complete Guide to C++ Strings)

- Part I: Win32 Character Encodings
- Part II: String Wrapper Classes