63Copyright © 2006 Nokia. All rights reserved.
Digital signature
You can make digital signatures with your phone if your SIM card has a security module. The signature can be
traced back to you by the private key on the security module and the user certificate that was used to perform
the signature. Using the digital signature can be the same as signing your name to a paper bill, contract or
other document.
To make a digital signature, select a link on a page, for example, the title of the book that you want to buy and
its price. The text to sign (possibly including amount, date, etc.) will be shown.
Check that the header text is Read and that the digital signature icon is shown.
Note: If the digital signature icon does not appear, there is a security breach, and you should not enter
any personal data such as your signing PIN.
Read all of the text, then select Sign.
The text may not fit within a single screen. Make sure to scroll through and read all of the text before signing.
Select the user certificate you want to use. Enter the signing PIN (see General information, 12) and select OK.
The digital signature icon will disappear, and the service may display a confirmation of your purchase.
■ SIM services
In addition to the functions available on the phone, your SIM card may provide additional
services that you can access in this menu which is shown only if it is supported by your SIM
card. The name and contents of the menu depend on the SIM card.
For availability, rates, and information on using SIM services, contact your SIM card vendor, network operator,
service provider or other vendor.
Depending on the operator you can set the phone to show you the confirmation messages sent between your
phone and the network when you are using the SIM services. Select Phone settings > Confirm SIM service
actions > Yes.
Accessing these services may involve sending messages or making a phone call for which you may be charged.
