over the past year, there has been a cycling boom, with shops struggling to keep up with the sheer scale of demand. but at the same time, there has been a steady flow of bike crime. last year, there were more than 80,000 incidents of bike theft, and many, many thousands more going unreported. like many people living in a big city, i often leave my poor bike left locked up outside, fending for itself. and unfortunately, over the last 12 months, it's received a lot of unwanted attention. all looks normal except, oh, where are the handlebars? there's the brake cable snipped. so, my personal woes got me thinking — what pieces of tech are out there to help keep my bike safe? first up, you have the motion