diff --git a/Home.md b/Home.md
index 521a7ae..e6013b9 100644
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+++ b/Home.md
@@ -54,6 +54,11 @@ Staged import pipeline for Cantaloupe machine data:
 
 **Tests:** 10 unit tests (test_cantaloupe_sync.py) + 23 integration tests (test_sync_api.py). All 33 pass.
 
+**Machine replacement detection (78f4b74):** The sync pipeline now detects when a new Asset ID appears at the same customer + address as an existing live asset not in the current import — indicating a potential machine replacement.
+- **high** confidence: exact address match
+- **medium** confidence: same building_name or same street name
+- Results stored in `diff_summary.replacements` array: `{id, new_machine_id, old_machine_id, location_address, customer_name, old_asset_name, new_asset_name, confidence}`
+
 ### Cron Job — 6h Auto-Sync (since e9d18cb)
 
 Hermes cron job `5ababff9c6e9` runs every 6 hours, executing `~/.hermes/scripts/cantaloupe-sync.sh`: