In the dialog that opens, click Show under the Onscreen keyboard switch.
You can use the onscreen keyboard as follows:
Click the keys of the onscreen keyboard with the mouse pointer.
Unlike with a physical keyboard, you can't click multiple keys on the onscreen keyboard simultaneously. To enter a combination of keys (for example, the Option key and SHIFT key), click the first key (for example, Option) and then click the second key.
To switch languages, click the key in the lower-left corner.
Important: The onscreen keyboard can't protect your personal data if the website you are sending data to has been hacked.