So the images are pretty self-explanatory. The thing is embedded in the bottom of the brush head so it is close to the brush itself. The chip and the antenna are embedded in a plastic ring for shape & basic protection. The ring itself is embedded in a nice sturdy piece of metal for real protection and easy assembly.
Notes:
- The whole metal ring can be taken out with a regular screwdriver (or anything small & flat), but i do not recommend prying at the plastic part that stands out, because the plastic seems to be fragile under the force needed to take it out
- I am currently using two tags - one as the basic plastic ring and one embedded in the little piece of metal. I don’t have enough data yet to tell how reliable & resistant / resilient those solutions are.
