It means that in some place of the application any type of symbol is accepted - letters, numbers, spaces, special symbols.
A from z
Decide what symbols you want to allow. For example: 26 uppercase letters + 26 lowercase letters + 10 digits = 62. Or less, if you don't want to distinguish uppercase and lowercase; or more, if you want to allow certain special symbols such as spaces, hyphens, etc. Raise this number to the sixth power, if you use 6 characters.
Alphanumeric characters means any combination of letters and digits. Sometimes other special symbols are allowed, too - so alphanumeric may sometimes be understood to mean a combination of just about any type of symbols.
Composed of letters and numbers
It means that in some place of the application any type of symbol is accepted - letters, numbers, spaces, special symbols.
alpha numeric refers to the keypad on your cell phone...it is the keypad which has numbers and letters of the alphabet-thus alpha being the alphabet and numeric being the numbers.
Written communication is an art of organized thoughts expressed in alpha-numeric or linguistic symbols or words printed in a legible surface, usually in paper.
ruby
The four numeric systems are Roman, Alpha, Mayan, and Arabic.
Alpha-numeric .
A from z
Type your answer here... 8000 per minute
Decide what symbols you want to allow. For example: 26 uppercase letters + 26 lowercase letters + 10 digits = 62. Or less, if you don't want to distinguish uppercase and lowercase; or more, if you want to allow certain special symbols such as spaces, hyphens, etc. Raise this number to the sixth power, if you use 6 characters.
Alphanumeric characters means any combination of letters and digits. Sometimes other special symbols are allowed, too - so alphanumeric may sometimes be understood to mean a combination of just about any type of symbols.
00.9
alpha-numeric digits