Everyplace 7.5 and above provides pinch-to-zoom functionality. If you need nice feature on lower versions and you cannot upgrade there is a small trick to fix this problem.
You only need to manually edit maximouiweb.war\webclient\components\page.jsp file and remove the following piece of code rebuild the EAR file and redeploy it.
maximum-scale=1.000; minimum-scale=1.000"
Be aware that changes to jsp files are not preserved during upgrades or fixpack/hotfix installation.
Thanks to my colleagues David Havican and Kevin Ferguson for this little tip.
Enable pinch-to-zoom on Maximo Everyplace 7.1