Is there a way to display a virtual keyboard on the Preboot authentication screen so that a touchscreen only device can log in?
Moved provisionally to ePO for better support
Moved to Encryption (Managed by ePO) for better response for Encryption Solutions rather than ePO Management.
Yes, the option is found in the Product Policy under the Log On tab and called "Enable on screen keyboard".
There is some limitations to on screen keyboard support.
Legacy BIOS support: KB76514 and KB79914
UEFI support: KB82160 and KB78050