Flutter & Friends
Flutter & Friends 2025
The August 31-September 2, 2025 Stockholm Flutter and Dart developer conference at Kulturhuset Stadsteatern. Its organizer-published conference-app source encodes the event schedule and, on August 30, added a Friends Badge extra that lets users select and dither an image before writing it to an e-ink conference badge through NFC. The source confirms an event-linked electronic artifact and mobile workflow, but not ticket eligibility, attendee-wide allocation, credential use, final physical configuration, or media rights.
Kulturhuset Stadsteatern, Stockholm, Sweden · Sweden · 2025
badge update workflow
The companion package documents image transfer to the badge through NFC using a Type 4/NfcA tag workflow. This identifies the update surface without exposing a claim about any active radio or every event unit.
Compatibility: Flutter & Friends e-paper conference-badge target
image-processing workflow
The package crops, resizes, and dithers an image before sending raw, uncompressed, column-major bitmap data to the documented badge target.
Compatibility: Flutter & Friends conference-badge companion workflow
implemented badge target profile
The package's implemented BadgeSpecification profile is a passive 240×416, 3.7-inch black/white/yellow/red target. It is the documented software target, not a full bill of materials or physical-production record.
Compatibility: friends_badge size3_7inchPassiveBWRY target
mobile application support
The dated conference-app commit adds Android NFC declarations and iOS NFC reader configuration alongside the Friends Badge feature. This is source evidence for app integration, not a guarantee of device compatibility or successful writes for every participant.
Compatibility: Flutter & Friends conference app on supported NFC-capable devices
participant-facing badge companion
The organizer-published app exposes a Friends Badge extra where a user can select an image, preview it, and invoke the badge write action. The source records a public customization interface, not a particular attendee's installed build or completed update.
Compatibility: Flutter & Friends 2025 E-Paper Conference Badge
active and Bluetooth protocol boundary · public package documentation · generic protocol material not assigned to event unit
The record does not claim Bluetooth, BLE, a battery, or active-radio behavior for the actual conference badge merely because the reusable package documents additional protocol families.
allocation and credential boundary · organizer-published app source · event-linked artifact confirmed; allocation unverified
The catalogue records a factual event-linked electronic badge and companion workflow without upgrading it to an all-attendee entitlement, admission credential, or distribution ledger.
app deployment, firmware, and source-rights boundary · public organizer-app and MIT package sources · companion source public; device deployment unresolved
The entry keeps open-source companion software separate from physical-badge firmware, event deployment, trademark/media rights, and any implied image-reuse permission.
hardware and physical-production gap · implemented software target profile · needs artifact or manufacturing documentation
The entry describes only the source-backed interface and target profile rather than reconstructing unsupported electronics or treating generic documentation as a final physical specification.
missing rights-cleared image · local project policy · needs licensed original replacement
The Sweden record remains source-backed and image-free rather than copying source-page media, documentation screenshots, event photos, social media, placeholders, or generated approximations.