Should i have to put the copy protection to my App

问题:

I have added the Android Licensing to my Application. to check for the application licensing.
There is also one option like copy protection during uploading the application on Android Market.
So if i have Implemented the Android Licensing to My apps, then should i have to give it to copy protection ?
Is it necessary to give copy protection ?
If i have not given copy protection and have given Android Licensing to My Application, then user can be able to copy it to anoter device. But should it be able to install in to another device ? I have to know about it..
So Please let me know what steps i have to take ?
Should i have to give copy protection on if i have given Licensing or not ?
Thanks in advance.

回答1:

Taken from here:
Replacement for Copy Protection

Android Market Licensing is a flexible, secure mechanism for controlling access to your applications. It effectively replaces the Copy Protection mechanism offered on Android Market and gives you wider distribution potential for your applications.

• A limitation of the legacy Copy Protection mechanism on Android Market is that applications using it can be installed only on compatible devices that provide a secure internal storage environment. For example, a copy-protected application cannot be downloaded from Market to a device that provides root access, and the application cannot be installed to a device's SD card.
• With Android Market licensing, you can move to a license-based model in which access is not bound to the characteristics of the host device, but to your publisher account on Android Market and the licensing policy that you define. Your application can be installed and controlled on any compatible device on any storage, including SD card.

Although no license mechanism can completely prevent all unauthorized use, the licensing service lets you control access for most types of normal usage, across all compatible devices, locked or unlocked, that run Android 1.5 or higher version of the platform.

回答2:

Google's "app filtering" is VERY buggy... and getting worse.

Many of our apps are listed "not available on this device"... even when the OS version is ok... the device is NOT on our "exclude list"... the device has absolutely NO screen-size or screen-resolution limits. Google still claims "not available on this device".

I'm RUNNING the apps... as we speak... right on several of the "forbidden devices". They install and run 100% fine. But they are forever listed as "not for this device" in the store.

Great way to sell apps. Users can't download them on 100 different fully legal devices.