silent install android application

No system signature, how to achieve a silent install and uninstall applications it? google market as a standalone application, but can silently install and uninstall. Not been studied, welcomed the discussion

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mark really rarely use google market
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His view can decompile under it!
This seems to be ROOM permission!
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reference to the second floor of the reply:

can decompile his term next thing!
This seems to be ROOM permission!

Ah, but there is this project going to tight so we ask no one to get hold huh
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This should be it requires root privileges, like general application are not implemented
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Want more. . .
System integration applications can silently install other applications
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System applications are installed in the system / app directory, you need root privileges.
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references, 5th Floor reply:

want more. . .
Integrated application systems can silently install other applications

I put in the application of the system can be made tripartite silent installation look into what the data / app not below
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I looked under the market's manifset did not see any special privileges code did not have time to see I guess google services framework to release their own applications or how to say

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Is it because the google market is on the system / app under. Itself is a system-level status, no root.