people usually have their own internet connection though,
Just in case, it's not a bad idea to know where we can access Wi-Fi.
JiWire,
WiFinder
Or try this shirt, ThinkGeek :: Wi-Fi Detector Shirt
Product Features
- Glowing animated shirt dynamically displays the current wi-fi signal strength.
- Shows signal strength for 802.11b or 802.11g
- Black 100% Cotton T-Shirt
- Animated Decal is Removable (with hook and loop fasteners) for Easy Washing
- Battery Pack is Concealed in a Small Pocket Sewn Inside the Shirt
- Runs for hours off three AAA Batteries (not included)
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