Keeping your kites high above the ground may also have issues.

Yes I know how GPS works. But NTP is the standard way to integrate a GPS receiver as a precision time source into a general purpose system. See e.g. here for a provider of GPS-based ntp solutions.

It's really simple: the clocks at the two checkpoints must be synchronized. The system probably uses ntp, and a GPS receiver as reference clock. Here in austria, a system like this has been in use on motorways since 2003.

I never claimed sqlite is the only solution without adminstration, but I think this is the biggest advantage it brings to the table. Also it seems to be very robust, and there are no license problems whatsoever. Its workings are very well documented. It is a very useful tool if you use it for the right tasks.

Can you give any specifics? Btw, you know that there is more than one isolation level available in Postgres?

sqlite is extremely slow when writing data. The reason is its implementation of transactions with separate journal files for each transaction. Also, there is only a very basic query optimizer. The main advantage of sqlite is that it does not require administration, certainly not performance.

There is no lack of rubber ducks in the ocean.

Had the Lisbon treaty been signed earlier, the European Parliament could have intervened at an earlier stage.

A cryptographic device might perform online statistical checks to detect this kind of tampering.

Hopefully he will not use a girder.

Most probable scenario: cross license deal.

well it is somewhat picky when choosing its friends.

Franz Kafka was not from germany, and he was not an existentialist either.

So YOU are responsible for this mess? Why not make up something beautiful, stupid?

I am looking at you, EMACS!