Data is a precious thing and will last longer than the systems themselves.
Civilization advances by extending the number of important operations which we can perform without thinking of them.
—Alfred North Whitehead
There are two layers that will be considered in this chapter: the Attribute Protocol Layer and the Generic Attribute Profile Layer. Both are so closely related that it is useful to discuss them at the same time. When Bluetooth low energy was created in the Bluetooth Special Interest Group (SIG), the concepts behind Attribute Protocol were originally created within a non-core working group before being integrated into the core specification. However, at the time of integration an architectural ...