How do I open virtual keyboard in Playstation4 platform?

I am currently switching our project’s platform from PC to PS4.

UI in our projects are based on NGUI.

Inspite of lots of googling, I cannot get any information openning virtual keyboard on ps4.

Any comments are welcome, if i can type a word.

I know that I can make a virtual keyboard for it. but it would cost a lot of time.

I am looking forward any reply on it. Thanks. :smiley:

Hello, have you found any info on the topic?