BridgeHands

PODI - A alternative Ace-showing acronym when opponents interfere with a Blackwood-type auction (DEPO remains most popular).  After opponent's interference bid, the Blackwood responses are Pass-zerO, Double-One:
 

Pass	Showing zero Aces or keycards
Double	Showing one Ace or keycard

 

* Note: Some advanced player prefer to interpret Suit bids according their Keycard system.  For instance, playing RKC, the 1st Suit bid would indicate 0 or 3 Keycards (not zero).