Nonrecoverable fatal errors may occur. However, in many instances, K9 units can autosearch independently. Your DOG should have a system name. The name may need to be initialized repeatedly until the system can read it correctly. This lets you issue voice commands to bring the unit to an online state.
Many owners give their DOGs a secret password as well.
Advanced system operators have successfully installed dozens of voice commands. You can also get the DOG's attention by booting the system. While this is effective, it is discouraged. Too much booting will abuse the system. In contrast to CAT units, there are many productivity applications for DOGs.