high tech tonga

An American, Japanese, and a Zambian Tonga were sitting naked in the sauna.
Suddenly there is a beeping sound. The American presses his forearm and the beeping stops. The others look at him questioningly.
"That's my pager, I have a microchip under the skin of my arm."

A few minutes later a phone rings. The Japanese lifts his palm to his ear. When he finishes he explains,
"That's my mobile phone. I have a microchip in my hand."

The Tonga, feeling decidedly low-tech but not to be outdone, decided he had to do something just as impressive. He steps out of the sauna and goes to the toilet. He returns with a piece of Toilet paper hanging from his butt. The others raised their eyebrows and said,
"Wow! What's that?"
"I'm receiving a fax," he explains.