Paper on splitting trust between smartphones and web browsers at MobiSys 2008. This work with Richard Sharp, Roy Want, and Trevor Pering extended our earlier crimeware research to enhance security on public terminals using mobile composition. The system splits web browsing functionality between an untrusted public terminal and a trusted personal mobile device, protecting users from keyloggers and screengrabbing attacks when using shared computers. We demonstrated how combining the convenience of public terminals with the security of personal devices could enable safer web browsing in public spaces.