This is intended for [eye] doctors to use as a portable vision/eye test chart. It displays 1 random letter at a time at industry standard sizes for a …
Keeps track of your current global position via GPS so your whereabouts can be monitored through a Google Maps interface. Only the current position is …
This is intended for [eye] doctors to use as a portable vision/eye test chart. It displays 1 random letter at a time at industry standard sizes for a …