Keyboard supporting Function Keys

I have a customer looking to have our Virtual Keyboard provide Function Keys on the ET1.  I didn't see any settings that would support this.  Will Motorola provide an update to the current OS to allow Function keys?  If not do you recommend a third party software?  I saw one that was free but it said that the keystrokes you type can be collected and sent somewhere.  I'd rather not go down that route.