Apple patent reveals Apple Pencil could gain an Acoustic Resonator that will allow it to be found via the 'Find My' App
Today the US Patent & Trademark Office published a patent application from Apple that relates to adding Apple Pencil to Apple's list of devices that could be a part of "Find My" devices service. Currently Apple Pencil is not on Apple's list of devices that could be tracked but will in the future, according to today's patent.
Source: patentlyapple.com