An Accessory is a type of Gear as well as a slot that the aforementioned Gear is equipped into. The number of Accessory slots available increases as a PC gains levels. However, multiple copies of the same Accessory cannot be equipped even if slots are available.
Accessories provide a wide variety of effects. Some are scenario-dependent while others work across all scenarios or even outside of them.
PCs have one Accessory slot at level 1, two at level 2, three at level 6, and four at level 10, plus any received from other effects.
No training is required to equip Accessories.
For more information, see Player's Guide Chapter 7: Gear and Wealth.