CryptoPhone is the name of a new PocketPC-based phone that provides state-of-the-art encryption technology for everybody (who can pay the price). The phone is based on a combination of two recognized encryption standard named AES-256 and Twofish using just a single dynamically generated key per phone connection.
What makes this phone outstanding is that its source code is going to be published in full for peer review. This a strong difference to other commercial products that do not disclose their encryption underpinnings which makes independent review impossible. The CryptoPhone people have a completely trustworthy approach. Check out their great FAQ to get more information on the details.
Best of all the product comes with a free windows telephony application using the same encryption allowing secure phone calls from PCs to the CryptoPhone. Hope there will be a Mac port soon.
Read more at Wired.