The theme for these decks is the ability to explore both sides of a question at once. The Shadow deck representing our inner, instinctive world and the unknown, and the Light deck representing our rational outer world and that which is known.
Likewise, what is a Shadow card?
Answer. Shadow Cards are used with the QEL Stand-Alone lockset. When ordering Shadow Cards (part number QEL2-O) you will receive Qty (1) ISO and Qty (1) Clamshell (labeled do not issue). These two cards “Shadow Cards” are encoded with identical information.