Compiled by JOHN COLLINS

INSTALL: Instant Heart Rate on your smartphone

This clever app uses your smart- phone’s camera to monitor colour changes in your fingertip as new blood is pumped into it, thus giving your heartrate. Available for Android and iPhone, it works best if there is a flash on your phone’s camera. Great for fitness freaks and useful even for the rest of us. The iPhone version costs €0.79.instantheartrate.com

BOOKMARK: The new Irish art project

New Irish Art has a simple goal which it has been fulfilling for a decade - to showcase the best Irish art. In its latest iteration, it is a clean and simple website that lets you contact the artist directly to buy it. newirishart.com

WATCH: A century of IBM

WATCH: When the Computing Tabulating and Recording Company was formed in 1911, its founders probably never suspected it would morph into the tech giant IBM that still dominates the sector.

The video doesn't address any of the more controversial events in IBM's history but, as a slickly produced reminder of technology's march over the last century, it hits the spot. http://bit.ly/gfqv8J

RANK: Your inner geek   

If you set aside the 10 minutes to rank your geekiness by answering questions about your knowledge of Star Wars, ownership of various pieces of tech and science kit or social habits, the chances are that you're a member of the computer-loving genus know as geek. For the record, your correspondent was ranked "total geek", much to his surprise. innergeek.us