Searching Local Spacetime
New applications for passive RFID
Ravi Pappu
Co-Founder / Head of Advanced Development
ThingMagic Inc.
(c) 2008 ThingMagic Inc. Please do not reproduce without permission.

Summary
• Passive RFID enables computers to see objects at distances from
millimeters to tens of meters.
• Battery-assisted passive systems have ranges of a 100+ meters.
• Read rates range from 200 to 1200 tags per second (protocol limited)
• Read accuracy is (100 - !)%, ! \" 0
• Diverse reader form-factors and low-cost tags enable applications in real-
time, ultra-local search
• Reality search engines are a reality
(c) 2008 ThingMagic Inc. Please do not reproduce without permission.