48■ Cache memoryA cache is a memory location that is used to store data temporarily. If you have tried toaccess or have accessed confidential information requiring passwords, empty the cacheafter each use. The information or services you have accessed is stored in the cache.To empty the cache while browsing, select Options > Tools > Clear the cache.■ Browser securitySecurity features may be required for some services, such as online banking orshopping. For such connections you need security certificates and possibly asecurity module, which may be available on your SIM card. For more information,contact your service provider.Security moduleThe security module improves security services for applications requiring abrowser connection, and allows you to use a digital signature. The security modulemay contain certificates as well as private and public keys. The certificates aresaved in the security module by the service provider.15. PC connectivityYou can access the internet when your phone is connected to a compatible PCthrough Bluetooth connectivity or a USB data cable connection. You can use yourphone with a variety of PC connectivity and data communications applications.■ Nokia PC SuiteWith Nokia PC Suite you can synchronize contacts, calendar, notes, and to-donotes between your phone and the compatible PC or a remote internet server(network service). To find more information and to download PC Suite, see theNokia website at www.nokia.com/support or your local Nokia website.■ Packet dataWith your phone you can use packet data services. For availability andsubscription to data services, contact your network operator or service provider.■ Data communication applicationsMaking or answering phone calls during a computer connection may disrupt thedata communication.