Sao Paulo, Brazil
Sometimes things you do on a whim turn out to be invaluable. Before I left I ordered a cheap Bluetooth GPS receiver on eBay from China. I thought it might be handy. Just stick it in your pocket and forget about it. I didn't realize it would be indispensable.
You are able to download maps on Wi-Fi only iPads and iPod touches but the problem has always been these don't come with GPS chips. A bluetooth GPS receiver solves that problem . I downloaded maps before ...