📓 2d barcodes.md by @flancian ☆

a [[list]].
- [[monochrome]]
  - [[qr code]]
  - [[aztec code]]
  - [[maxicode]]
  - [[data matrix]] up to 2.3k chars
  - [[SPARQCode]]
  - [[PDF417]]
- [[color]]
  - #pull [[color qr]]
  - [[jab]]
  - [[hccb]]