This reminds me of Chris Speed's toilet paper sensor experiment. Although it's more frivolous, the fairly detailed analysis of the ethics and sensitivities arou

This reminds me of Chris Speed's toilet paper sensor experiment. Although it's more frivolous, the fairly detailed analysis of the ethics and sensitivities around monitoring people's visits to the toilet seems to apply equally well for this invention... http://chrisspeed.net/?p=1529 http://chrisspeed.net/?p=1529