Both the 200 and 202 can definitely be used on Wi-Fi if you purchase the adapter. It is interesting that you are carrying a 202 around with you, but none the less it will work but you may find it tedious to get it to register on a zillion different wi-fi SSID's. As far as security goes the Obi is no more or no less secure than any other device running on a hotel network. I use one all of the time on a network at an assisted living facility and it works great for less than $4 per month.