The owner of three gastronomy locations put the problem to me exactly like this: "I have a fingerprint clock at the big location, at the other two I write it down on a spreadsheet and at the end of the month it's all a mess." It's the typical situation for an Argentine SME in 2026. There are more options than ever to record who comes in and who goes out, but also more ways to choose poorly. Here we review what types of attendance clocks exist, what to look for before buying, and why the fixed device on the wall often falls short.