Why should you always lug around a laptop when you can do your typing from any lighter tablet or even smartphone these days? Of course, writing longer texts on a virtual on-screen keyboard is much less fast and comfortable than on physical keys. But since most external keyboards are big and bulky, Logitech now wants to offer the perfect companion for iPhone and iPad, but also Android devices - the Keys-To-Go.
https://www.notebookcheck.net/Logitech-Keys-To-Go-in-hands-on-review-Ultra-thin-small-and-light-keyboard-for-iPhone-Co.531582.0.html