There are teams/companies working on this and I believe the sensor patches are available, not aware of anyone making a wearable computer out of it (yet): https

There are teams/companies working on this and I believe the sensor patches are available, not aware of anyone making a wearable computer out of it (yet): https://sciencebeta.com/transdermal-glucose-measurement-patch/ https://sciencebeta.com/transdermal-glucose-measurement-patc...