Are there any common patterns or general guidance I can learn from for how to design a client/server system where the both the client and server must maintain some kind per-client session state? I've ...
I want to save some user-generated data with some signature of the user that generated it (let's say that the user has to fill some forms with some data and I want him to sign the written data). The ...
Let's assume that we have a simple GIS-like application, which presents (using Google Maps or anything similar) recorded tracks. Each track consists of points (data portions) with geo-data and ...