Authorization Letter at a glance
What it is: Authorization Letter: I hereby authorize Mr or Ms, holder of HKID Card or Passport no., to collect.
Who signs: The Credit Card Holder signs.
A filled-in Authorization Letter example: a card holder authorizes an order collection

How to fill out Authorization Letter, box by box
What to collect, the totals and the order number
Sources
[1] Authorization Letter, generic template with no issuer printed (the Official source link on this page).



