Unattended Robotis needs to have OCR engineer installed in the host / open-platform system?

Dear Sir,

My local vendor told us that for unattend robot, it needs to have OCR engineer installed in the host / open-plaform system (e.g. IBM OnDemand) if we need to extract wording from a image ? NICE’s vendor told us that their unattend robot has OCR feature, no need to install OCR engineer in the host / open-plaform system.

May I know whether it is true ? Thanks