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标题: Hi-Tech Surveillance [打印本页]

作者: choi 时间: 9-10-2012 15:20
标题: Hi-Tech Surveillance
Veronica Dagher, For the Fearful Who Have Everything * * * The latest in high-tech security gadgets. Wall Street Journal, Sept 10, 2012.
http://online.wsj.com/article/SB ... 63030440267736.html

Note:
(a) Heading (and item) 2 is "Thermal Imager."

Noel Lawrence, How to Locate Hidden Sensors Used for Thermal Imaging Surveillance.
http://www.ehow.com/how_6102915_ ... g-surveillance.html
("Thermal imaging cameras and surveillance systems * * * use platinum silicide (PtSi) sensors to detect and monitor the movements of human subjects in poorly illuminated areas. * * * infrared devices emit radio waves that can be picked up by standard radio-frequency detection equipment")

(b) Heading 6 is "Micro GSM-Based GPS Tracker."

GSM
http://en.wikipedia.org/wiki/GSM
(2G)

(c) Heading 7 is "Hailing Device."
(i) hail (vt): "to call out to in order to stop, attract attention, ask aid, etc. <to hail a cab>"
Dictionary.com, undated.
http://dictionary.reference.com/browse/hail
(ii) Long Range Reconnaissance Patrol
en.wikipedia.org/wiki/Long_Range_Reconnaissance_Patrol
(acronym: LRAP)
(iii) LRAD Corporation; The Global Leader in Long Range Acoustic Hailing Devices.
www.lradx.com/

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