Motorola MC3090G Integration Guide - Page 111

Chapter 5 Application Deployment for Windows Mobile 6.1 Introduction This chapter describes new features in Windows Mobile 6.1 including new security features, how to package applications, and procedures for deploying applications onto the MC3000. Application Design Considerations To ensure application compatibility of a 320 x 320 display in Windows Mobile, some applications will need to be recompiled with the Microsoft WM6 SDK. Security The MC3000 implement a set of security policies that determine whether an application is allowed to run and, if allowed, with what level of trust. To develop an application, you must know the security configuration of the device, and how to sign an application with the appropriate certificate to allow the application to run (and to run with the needed level of trust). Application Security Application security controls the applications that can run on the MC3000. • Trusted - All applications must be digitally signed by a certificate on the MC3000. • Prompted - User is prompted to allow unsigned applications to run. • Open - All applications run. Developers can include their own certificates and provision the device to "trusted." Digital Signatures Digital signatures provide a way to authenticate the author of EXEs, DLLs, and packages. Digitally signed applications give users confidence that an application comes from where they think it comes from. For example, if an end-user downloads an update package from the internet that is digitally signed with Motorola's software