Instant Offers Basic Protection. Generally, if you want to have a simple “Run/Don’t Run” check and perhaps also offer a “Ready-To-Try” program on your website, CrypKey Instant is all you need. The primary advantage of CrypKey Instant is it’s quick to implement. The protection process takes only minutes and there is no need to re-compile the executable. CrypKey Instant takes care of the interface, logic and control. All you need do is run it on your software and it outputs a protected executable with automatic installation. You are not required to write code, make calls to CrypKey’s libraries.and there is no need to access the source code. SDK Provides Greater Control. If you require more control and integration in the inner workings of your program, CrypKey SDK is the right choice. The primary advantage of CrypKey SDK is its flexibility. CrypKey SDK lets you control what CrypKey does and when it does it, based on your own program requirements. For example, you will need CrypKey SDK if you want to meter the use of a calculation within the program. Or you may want to make the security interface seamlessly consistent with the rest of your program. If you expect your software to be targeted by hackers, you will want as much security as CrypKey can provide. CrypKey Instant and CrypKey SDK include CrypKey Stealth.