Summary

This chapter trudged through the complexities of Bluetooth, starting with its origins of discovery, pairing, and connection, then moving to the more efficient low-energy version that allowed smaller devices to take advantage of the technology. Newer still, beacons allow connectionless identity querying and proximity calculations for tracking the movement of devices and providing apps with the ability to be contextually aware. Finally, we showed how small, credit card-sized computers can help with budget and space concerns, without having to sacrifice features or switch to a different development tool—Delphi shines through all these scenarios in providing a rich development tool.

Now that we've had our fun with small, mobile devices, it's time to turn our attention to powerhouse servers where Delphi can just as effortlessly crunch monstrous SQL queries against massive databases as it can manage multiple requests from a variety of web servers. Read on!

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