QR Tetris

Designer Ming Ling has created the most wonderful QR code constructed out of Tetris pieces. The full size version is a work of beauty. As I've explained before, this works because the QR scanner sees the image in black and white - so light colours disappear. Anything else is covered by the fairly generous error […] Read More

Invasion Paris!

I love nothing more that a tramp round a city. Taking the Metro in Paris is very simple - and fairly cheap - but the riches you discover wandering around make up for the extra time needed. A few years ago, Miss Geeky introduced me to Space Invader spotting. Dotted around the cities of the […] Read More