Hi,
yes, now you need to sign a NDA with NXP. I received the following answer from Yubico support after requesting a developer account:
Quote:
Thank you for contacting Yubico Support.
Earlier this year, Yubico moved to locked down YubiKey NEOs to prevent attacks directed at the known transport key for the NXP chipset used by the YubiKey NEO. In order to obtain Developer NEOs, you must first contact NXP directly and sign an NDA with them. You will then be cleared to develop applets for their chipset, which Yubico can load onto YubiKey NEOs for a small production fee. If you need more specific information, you're requesting an NDA from NXP to develop for the JCOP 2.4.2 R1 OS.
Best Regards,
Yubico Support Team
After that I opened a support ticket at NXP to request a NDA under:
http://www.nxp.com/my/services/technical-support-tickets?sort=subject, but I didn't get any answer until now (11 days now). I was hoping I could use some free time around Christmas, playing around with JavaCard applet development.
I understand that NXP wants to protect their intellectual property but I must admit admit that I am not totally happy about the "small production fee". Has anybody already any experience with this process? Or at least managed to get a NDA from NXP as a single person developer (not in the name of a company)?