First International Digital introduces WiFi Sentry Hotspot locater

First International Digital, maker of the irock, Beamit and MusiCase iPod and digital audio accessories, today introduced the WiFi Sentry, a  keychain-sized device that locates wireless access points in less than half a second with the push of a button.

The device locates both 802.11b and 802.11g networks within 300 feet. Four LEDs indicate relative signal strength and direction. The WiFi Sentry is only 2.25" x 1.20" x 0.43" and is powered by two CR2032 batteries, which are user replaceable. It's completely portable and easily attaches to a keychain. It retails for $25.

Unlike other wireless access point locators, WiFi Sentry claims to be virtually immune to false readings from devices such as cordless phones and microwave ovens, making it an easy way to quickly locate hotspots at airports, hotels and coffee shops, as well as fine-tune placements for home or office wireless networks.

I used the irock FM transmitter a few years ago when it first came out. It was one of the first on the market, if I recall correctly. Unfortunately, I never could get it to work in NYC – which is probably more the fault of NYC's crowded radio dial their fault. I haven't used any of their other products, so I'll be curious to try this one out. I've been wanting to pick up one of these keychain-sized WiFi finders, so maybe I'll see if anyone has one of these on the Macworld Expo floor.