In the sauna

Three women, two younger, and one senior citizen, were sitting naked in a sauna.
Suddenly there was a beeping sound. The young woman pressed her forearm and the beep stopped. The others looked at her questioningly. 'That was my pager,' she said. 'I have a microchip under the skin of my arm.'
A few minutes later, a phone rang. The second young woman lifted her palm to her ear. When she finished, she explained, 'That was my mobile phone. I have a microchip in my hand.'
The older woman felt very low-tech. Not to be outdone, she decided she had to do something just as impressive. She stepped out of the sauna and went to the bathroom. She returned with a piece of toilet paper hanging from her rear end.
The others raised their eye brows and stared at her. The older woman finally said... 'Well, will you look at that...
I'm getting a fax!!