A certificate is an electronic document used in cryptography.

In computer networking, localhost is the hostname given to the address of the loopback network interface. It is used by a host to access network services running on itself.

AdMob is a mobile advertising company owned by Google. This tag should be used for questions relating to the use of the AdMob SDK and incorporation of AdMob services into your code. Stack Overflow is not a site for discussion of features or usage of the AdMob service.

PHPUnit is a programmer-oriented testing framework for PHP. It is an instance of the xUnit architecture for unit testing frameworks.

Authorization is the process of determining whether a user, program or device is allowed to access a protected resource in a particular way. Authorization is a key theme in computer security practices.

The Java Native Interface (JNI) gives both the ability for JVM implementations to run system native code and the ability for native code to run Java code (by creating new JVM instances). The most common target languages for JNI are C and C++, for which at least the Sun/Oracle JDK implementations provide helper commands (javap - for code disassembly, javah for c code generation).

IIS (Internet Information Services) Version 7 – is a web server application and a set of feature extension modules created by Microsoft for use with Microsoft Windows. Released with Window Server 2008 and Windows Vista.

A provision that many programming languages provide to allow functionality defined in one file to be used in another.

LocalStorage is a way to store persistent data using JavaScript (see also: SessionStorage).

Gson is Google's open-source library for serializing and deserializing Java objects to/from JSON.

A convolutional neural network (CNN, or ConvNet) is a class of deep, feed-forward artificial neural networks that has successfully been applied to analyzing visual imagery. It falls under the [deep-learning] tag.