have developed an intuitive method that allows the user to enter a number in a similar
way to its phonetics, by
using a concept called Verbal Numerals.
This procedure, described in US Patent 5,623,433, extends a normal
keyboard with three additional keys. One for "Hundred,"
one for "Thousand" and one for "Million." With
the help of these keys, the
number can be entered as it is pronounced. For example, to enter
2007, you press  [thousand] .
This approach is an enhancement, not a replacement of the traditional method.
It gives you the
capability to enter large numbers that contain multiple zeroes by using less
keystrokes. And you don't need to figure out the position of the
zeroes within the number.
X-Number method can be combined with the traditional method at any time
during the entry of the same number. For example, to enter "Two
hundred and forty seven" you can use the sequence
[Million][Hundred], or combine with the traditional method
by using [Million].