Seems that Enterprise Browser behaviour changed in v1.3 around this API.
I'll take a look into it and report an update as soon as possible.
a couple of notes.
- Formatting of the original blog on Launchpad mangled the last double-quote char. This is why EB was crashing for you.
- EB v1.3 requires to enable FunctionKeysCapturable in the Config.xml to enable the KeyCapture API.
Thanks for reporting the issue. I've added a note on the original blog post to explain the requirement for EB v1.3 and corrected the double-quote char in the command line.
Let me know if this solve your issue.
Thank you very much. The button is now disabled.
This solution does work in EB 1.3, but does not work in EB 1.4. Is there something interacting with the new KeyMapping feature that changed? (When I copy a config.xml from my EB1.3 TC70 to my EB1.4 TC70, the back button starts functioning again on the 1.4 device)