DumbBadge, SmartBadge, and Intelligent Badge

see "Environment Aware Computer Systems" by H. W. Peter Beadle, G. Q. Maguire Jr., and M. T. Smith
http://www.elec.uow.edu.au/people/staff/beadle/badge/location_aware.html

Location and Context Aware fi Smart Badge [an IP device]

Audio in/out, light level, temperature, humidity, orientation, ...