Magnetically Actuated Pen
Why have a bulky externally moving component that can build up grime, when you could have a fully sealed and touchless internally actuated clicker mechanism.
The Actuation
Eliminating the external clicker mechanism provides a unique experience to a common daily-use object. Integrating a magnetic lock, in a way, acts as not only a conversation starter, but a level of security that invokes a second look. While they might be able to take your pen, they could never use the ink within.