QR Code

Seen those funky little QR (quick response) bar codes floating around and wondering how to scan them on your iPhone or iPad? QR codes are used to store useful information like web URLs, contact cards, e-mail addresses, etc… While QR reading isn’t built into a pre-installed iOS App, there are, of course, third-party apps for that.

Photo “QR_Babysitters.jpg” by
Ed and Eddie
is licensed under CC BY 2.0

Bluetooth Low Energy

Bluetooth Low Energy (Bluetooth® Smart) is the intelligent, power-friendly version of Bluetooth wireless technology. While the power-efficiency of Bluetooth Smart makes it perfect for devices needing to run off a tiny battery for long periods, the magic of Bluetooth Smart is its ability to work with an application on the smartphone or tablet you already own. Bluetooth Smart makes it easy for developers and OEMs to create solutions that will work with the billions of Bluetooth enabled products already in the market today.

Photo “WP_20140917_22_33_47_Pro” by N i c o l a is licensed under CC BY 2.0


Most smartphones and even mobile phones these days have a function that shows you on a map exactly where you are. This is possible thanks to signals from GPS satellites that orbit the Earth. There are 24 satellites in all, but by receiving the signals from at least three of them, one’s position can be determined fairly accurately.

Photo “GPS Logs from Portland – 2008-2010 – Geoloqi.com” by Aaron Parecki is licensed under CC BY 2.0