• Various new wireless communication protocols (Bluetooth, GPRS, GSM, WDCMA, WiFi)

• New billing models for hotspot access (scratch cards, subscriptions, roaming)

• Wireless is much easier to eavesdrop then ethernet cables or phonelines

• Connecting to a rogue Access Point; Or accidently connecting to a private Access Point

• You have to be able to connect to the network before you can authenticate, pay and then somehow go into a secure mode to use the Access Point.

• Most standard way of securing Access Points is WEP, which is useless for hotspots, since you are telling everyone all the secrets (The WEP key)

• You can't rely on preloaded software by a sysadmin, since this might be a roaming user.

Notes: