Ever since stumbling over Cyrill Künzi’s article about the Sonicare brush head timer reset (which I’ve written about here), I’ve wondered what else is stored in the data. This is what a dump of the Mifare Ultralight NTAG213‘s memory from a white Sonicare A3 Premium All-in-One head looks like: The memory is organised into “pages”… Read More »
Modern heads for Sonicare toothbrushes come with a small chip that records not only the type of head, but also how many seconds you’ve used it – so the head unit can remind you that it’s time to swap the head for a new one. This isn’t purely for monetary reasons, especially as the unit… Read More »
In December 2011, I bought a Philips Sonicare DiamondClean Smart 9400 toothbrush set, product code HX9917/89. This included a HX992B handset – that offers Bluetooth connection to their app and also has a LED in the bottom to show when you’re applying too much pressure while brushing. The handset transfers your brushing info to their… Read More »