fix: overhaul beacon discovery to find all DX beacons #32

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schwifty merged 1 commit from schwifty/fix-beacon-discovery into main

2026-03-22 22:59:22 +00:00

schwifty commented

2026-03-22 22:56:10 +00:00

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Problem

iOS only finding 1 out of 8-9 nearby DX beacons.

Root Cause

Android detects DX beacons by MAC OUI prefix 48:87:2D — iOS cant do this. The fallback detection had multiple gaps:

FFF0 service UUID mapped wrong (BlueCharm instead of DXSmart)
No DX factory default UUID check (E2C56DB5-...)
No Payfrit shard UUID check
Too restrictive: dropped ALL unknown devices
Missing FEA0 service UUID and DX-CP name pattern

Fix

Full iBeacon manufacturer data parsing with UUID extraction
DX factory default UUID + Payfrit shard UUID detection
Fixed FFF0 disambiguation
Permissive fallback: connectable devices with names included
Added FEA0 and DX-CP patterns

## Problem iOS only finding 1 out of 8-9 nearby DX beacons. ## Root Cause Android detects DX beacons by MAC OUI prefix 48:87:2D — iOS cant do this. The fallback detection had multiple gaps: - FFF0 service UUID mapped wrong (BlueCharm instead of DXSmart) - No DX factory default UUID check (E2C56DB5-...) - No Payfrit shard UUID check - Too restrictive: dropped ALL unknown devices - Missing FEA0 service UUID and DX-CP name pattern ## Fix - Full iBeacon manufacturer data parsing with UUID extraction - DX factory default UUID + Payfrit shard UUID detection - Fixed FFF0 disambiguation - Permissive fallback: connectable devices with names included - Added FEA0 and DX-CP patterns

schwifty added 1 commit 2026-03-22 22:56:10 +00:00

fix: overhaul beacon discovery to match Android detection logic 174240c13e

Major detection gaps were causing iOS to miss 7-8 out of 8-9 nearby DX beacons:

1. FFF0 service UUID was incorrectly mapped exclusively to BlueCharm.
   Android maps DXSmartProvisioner.SERVICE_UUID_FFF0 to DXSMART.
   Now checks device name to disambiguate FFF0 between DX and BlueCharm,
   defaulting to DXSmart (matching Android behavior).

2. Added DX factory default UUID detection (E2C56DB5-DFFB-48D2-B060-D0F5A71096E0).
   Android catches DX beacons by this UUID on line 130 of BeaconScanner.kt.
   iOS was missing this entirely.

3. Added Payfrit shard UUID detection — already-provisioned DX beacons
   broadcasting a shard UUID are now recognized.

4. Added iBeacon manufacturer data parsing with proper UUID extraction.
   Any device broadcasting valid iBeacon data is now included (not just
   those with minor > 10000).

5. Added permissive fallback matching Android lines 164-169: connectable
   devices with names are included even if type is unknown, so they're
   at least visible to the user.

6. Added FEA0 service UUID for BlueCharm (Android line 124).

7. Added "DX-CP" name pattern (Android line 138) that was missing.

Root cause: Android uses MAC OUI prefix 48:87:2D to catch all DX beacons
regardless of advertisement contents. iOS can't do this (CoreBluetooth
doesn't expose MAC addresses), so we compensate with broader iBeacon
UUID matching and more permissive device inclusion.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

schwifty merged commit df2a03f15a into main

2026-03-22 22:59:22 +00:00

schwifty referenced this pull request from a commit

2026-03-22 22:59:24 +00:00

Merge pull request 'fix: overhaul beacon discovery to find all DX beacons' (#32) from schwifty/fix-beacon-discovery into main

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Reference: payfrit/payfrit-beacon-ios#32

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