1. Software sends a simple numeric code to a mobile device that can then be entered into a traditional login screen.

2. Simply shaking the phone after the initial PIN has been created generates the random numeric digest.

3. It means you have to think really fast to figure it out as you try endless combinations of long, numeric keys.

4. But in reality, a numeric code or password is usually required for security, reducing the convenience factor.

5. So why not scrap any association with an entire numeric leap?

6. Larger notebooks usually have enough room to include a dedicated numeric keypad.

7. When entering data in cells, you can also use a numeric keyboard, which greatly speeds entering formulas and numbers.