How to avoid the google keyboard (or other virtual keyboard) on ET50 to come up when focus on an application input field

A customer is asking to possibly keep the google keyboard minimized to icon when they focus on an input field of the web application.

This request is due to the fact that to the ET50 they will connect our DS3678 ER, which will cover the most needs of data entries.

For this reason, when the cursor move from a field to the other, it will wake up the virtual keyboard every time and this behavior creates disturb to the users.

Does anyone has already faced this issue / request?