High-End Audio Surveillance Equipment Uncovered by Dan Crane
What Audio Spy Equipment is the Best for Secret Audio Surveillance? There’s nothing better than wearable spy equipment when performing a secret surveillance operation. It’s undetectable to the naked eye and it’s just as powerful as some larger spy devices. ... We’re not talking here about cell phones that spy on others (like another wearable spy equipment device). ... You could even take a mini spy device and incorporate it into your clothes or other accessories, like purse, earrings or hairgrip.

Pros and Cons of Wireless Video Security by Jason Katzenback
Increasing security concerns have led to increasing numbers of security cameras. Public buildings, stores, banks and private homes have all stepped up the security of their property and installed video cameras. Now, technology has made it easier than ever to look after your property. ... The camera connects to the transmitter while the receiver connects to the recording device. ... There are many factors you have to consider, like how far the camera is away from the recording device and power source.

Informed Consent: Ethical Considerations of RFID by Sally Bacchetta
He who mounts a wild elephant goes where the wild elephant goes. Randolph Bourne Radio Frequency Identification (RFID) has incubated in relative obscurity for over 60 years, quietly changing our lives with scant attention outside the technology community. ... “Because the spy chips are not destroyed at the shop exit, they continue to be readable to any interested party, such as other supermarkets, authorities, or anyone in possession of a reading device (available to the general public)... ... so, RFID tags can be hidden in our prescriptions without our knowledge or consent...