Embodiments are directed to a combination of an automation system that continuously tracks the identity and positions of all of its pucks with a single sample identification station and covers/interlocks in order to provide sample chain of custody without the need to re-identify the sample at points of interaction (aspiration, de-capping, etc.). This eliminates the need to have sample identification stations at each interaction point. This reduction of hardware allows the system to be cheaper, smaller, and more reliable. It also allows not only the automation system, but also existing pre-analytical/analytical equipment connected to the automation system, to run more efficiently.