darn cute invention .. i have seen a similar thing for retail outlets though .. you have to pass a kinda infrared sensor and then you hear birds whistling .. this is to alert the shopowner that a customer just entered the shop .. would be useful for a shop that does not have that many customers though ….
November 25th, 2008 at 5:11 am
darn cute invention .. i have seen a similar thing for retail outlets though .. you have to pass a kinda infrared sensor and then you hear birds whistling .. this is to alert the shopowner that a customer just entered the shop .. would be useful for a shop that does not have that many customers though ….