Business cards are dying art — in the West, anyway. Most of us may never appreciate a finely crafted card that can make the wince of a jealous, smooth-haired serial killer, but this business card competition at Hackaday is hoping to change that. Or, at least, get creative with what makes up the "card".

There are several guidelines for business cards entering the contest: The card must be about 3.5 x 2 inches and must "fit easily in the pocket" Beyond these few basic guidelines, the rules are open to interpretation. Though there are few categories to strive for, including for the thinnest cards, utility cards, and the best-looking cards. 

The contest runs until 7/2, but there are already various outstanding participants at gawk.

One project made by LambertTheMaker, a business card you find on a business card such as a phone number, email address, or any identifiable company details, nee black PCB also includes a directional button and A/B button to control it.

So, the game console, that's my kinda card.

There's another 1 such thing. This card from Edison Science Corner is a mini tic-tac-toe console.

Another seriously — is a couple sheets of paper, in the meantime creator Lincoln Uehara is packing the circuit. With the correct cut and crease, you can fold a piece of paper into a usable USB Type-A connector. Theoretically, it is possible to use this to create some kind of usable flash drive, but as far as I know, the WIP project lights up the LED.

This card from Martynas is useful in emergencies. Well, kind of. This is a circuit that can generate an SOS signal with Morse code.

Adam Billingsley's entry is a card that can deliver text-based payloads to a pc and share important information when connected via USB (ideally one of the best bits about this entry nefarious, however, it reportedly only costs 4 to 4 to make.

Vying for the "most expensive" category, if there is such a thing, is probably Dimitar's, with an e-ink display embedded in its front. That is, you also need a fairly large lithium battery.

But my absolute favorite design is chaosneon's "persistence of vision" card, and this project that needs to shake to reveal the text displayed on a handful of Leds, like some others, has now been in the works for a good few years— the business card design is amazing in hackaday. It is so popular that it is so popular that it is so popular that it is so popular.

The best thing about most designs is that they are open so that others can copy and develop themselves.

The practicality of any of these cards, you know, is questionable at best. I struggled to get my company to pay hundreds of cardboard business cards for a trip to Taipei — I filed my bill for 200 small game consoles

cheaper than Hi design. This from Dima I actually want for myself — it's a convenient card for measurements included in the exterior, and it's easy to scan the phone around36 at about 100 units, it can actually be done!