How it works

The Proximity Sensor senses the presence of an object, sending a low value for a distant object or a high value for a close object.

How students have used it

• Sensed how close other students or objects are 
• Communicated sensor to other wireless blocks
• Counted how many people have entered a room
• Set up an alarm 

How blocks are used in real world

• Contactless Payment 
• Automatic Hand Dryers 
• Supermarket Checkout