If incognito mode makes sense in an app, then it has to be the keyboard, since we type a lot of things using them, including passwords, OTPs, and many other sensitive details that you probably don’t want to share with everyone. In fact, modern keyboards even have the ability to automatically capture OTPs that you’ve received via SMS. Then there are copied items that are also saved to the keyboard app’s clipboard. This is where incognito mode on keyboards comes in handy.

Now, native keyboard apps – Gboard on Android and Apple Keyboard on iOS, iPadOS have an incognito mode. Similarly, Microsoft’s Swiftkey also has a built-in incognito mode. But the app is different.
However, they work when needed. So, here's how you can use incognito mode on keyboards. How to use incognito mode on Apple's keyboard and Gboard.
Both Apple and Google have made the incognito mode available in the native keyboard app. However, they only work with Safari and Chrome respectively. Also, they are automatically enabled when you enable the incognito mode on the keyboard. Apart from that, there is no other toggle to enable or disable it as per the requirement.
Also, the colors on both keyboards change when incognito mode is enabled. The Apple keyboard turns black, while Gboard displays a border around the keys when incognito mode is enabled.
This is where Swiftkey comes in. Incognito mode is manual, and users have the option to turn it on or off whenever they want.
How to use incognito mode in Microsoft Swiftkey
Tap on the menu in the top right corner of the keyboard. You will see the incognito icon. Tap on it to enable incognito mode on the keyboard. Once enabled, the keyboard color will change to Black.
Information source: gadgetsnow.com
