While shopping for a new phone recently, I came across two models (Toshiba and Uniden I believe) that have buttons to "privatize" you conversations. These were on no-cord models. Does anyone have any idea on what these actually do? Can the phones change the frequency the call is on randomly so people can't tune into it? I know cellulars offer something similar. Personally, I would never put much faith into something of this sort.
Even if they did change the frequency the call was on, it would be a simple matter to decode how the frequency change was negotiated, and "follow" the call (also easily accomplished with cellular calls). Failing that, there is a very limited range of frequencies allocated for cordless fones, and simply re-scanning for the conversation is a trivial inconvenience. //cerridwyn//