Blocking package installation

问题

Is it possible to block the installation of a package on a Honeycomb device? What I'd like to have is an application (or service or everything) that, once running, it inhibits subsequent installation of other packages. Let's suppose to be a service. While it runs, if the device user attempts an installation by the Market, it will be aborted. It is possible (continue supposing) to register an APPLICATION_IS_ABOUT_TO_BE_INSTALLED broadcast receiver that can break the PackageManager process?

Thanks in advance L.