CS4070 - Configuring device delete key

Is it possible to configure how the delete key on the CS4070 behaves when connected to a Bluetooth device using HID profile?


I'm using CS4070 barcodescanner with Android and IOS devices. On Android the delete key sends a null keycode, which I can capture through javacript, but on IOS it only hides and shows the onscreen keyboard without sending any keypresses to the IOS device. I don't have access to the IOS api because I'm developing an web application, so if there is a way to configure this behavior or somehow capture the keypress it would be very helpful.