diff --git a/lib/Zureg/Database.hs b/lib/Zureg/Database.hs
index 60951d6..bffbc04 100644
--- a/lib/Zureg/Database.hs
+++ b/lib/Zureg/Database.hs
@@ -167,6 +167,7 @@ data RegistrantsSummary = RegistrantsSummary
     , rsConfirmed :: Int
     , rsAttending :: Int
     , rsAvailable :: Int
+    , rsScanned   :: Int
     } deriving (Show)
 
 $(A.deriveJSON A.options ''RegistrantsSummary)
@@ -175,11 +176,12 @@ registrantsSummaryToAttributeValue
     :: RegistrantsSummary -> DynamoDB.AttributeValue
 registrantsSummaryToAttributeValue RegistrantsSummary {..} =
     DynamoDB.attributeValue & DynamoDB.avM .~ HMS.fromList
-        [ ("total", avi rsTotal),
-          ("waiting", avi rsWaiting ),
-          ("confirmed", avi rsConfirmed),
-          ("attending", avi rsAttending),
-          ("available", avi rsAvailable)
+        [ ("total", avi rsTotal)
+        , ("waiting", avi rsWaiting)
+        , ("confirmed", avi rsConfirmed)
+        , ("attending", avi rsAttending)
+        , ("available", avi rsAvailable)
+        , ("scanned", avi rsScanned)
         ]
 
 
@@ -187,7 +189,7 @@ registrantsSummaryFromAttributeValue
     :: DynamoDB.AttributeValue -> Maybe RegistrantsSummary
 registrantsSummaryFromAttributeValue av = RegistrantsSummary
     <$> getInt "total" <*> getInt "waiting" <*> getInt "confirmed"
-    <*> getInt "attending" <*> getInt "available"
+    <*> getInt "attending" <*> getInt "available" <*> getInt "scanned"
   where
     getInt :: T.Text -> Maybe Int
     getInt key = do
diff --git a/lib/Zureg/Main/Janitor.hs b/lib/Zureg/Main/Janitor.hs
index bbf2d70..96dd719 100644
--- a/lib/Zureg/Main/Janitor.hs
+++ b/lib/Zureg/Main/Janitor.hs
@@ -67,15 +67,17 @@ main hackathon =
         waitingRegistrants = waitingListUUIDs registrants
         registrantsToPop = take freeSpaces waitingRegistrants
         freeSpacesLeft = freeSpaces - length registrantsToPop
+        scanned = length $ filter rScanned registrants
 
     popWaitinglistUUIDs hackathon registrantsToPop
 
     let summary = Database.RegistrantsSummary
-            { Database.rsTotal = length registrants
-            , Database.rsWaiting  = countByState isWaiting registrants
+            { Database.rsTotal     = length registrants
+            , Database.rsWaiting   = countByState isWaiting registrants
             , Database.rsConfirmed = countByState isConfirmed registrants
             , Database.rsAttending = attending
             , Database.rsAvailable = freeSpacesLeft
+            , Database.rsScanned   = scanned
             }
 
     Database.putRegistrantsSummary db summary
@@ -86,7 +88,8 @@ renderSummary rs = show (Database.rsTotal rs) ++ " total, " ++
   show (Database.rsWaiting rs) ++ " waiting, " ++
   show (Database.rsAttending rs) ++ " attending, " ++
   show (Database.rsConfirmed rs) ++ " confirmed, " ++
-  show (Database.rsAvailable rs) ++ " available"
+  show (Database.rsAvailable rs) ++ " available, " ++
+  show (Database.rsScanned rs) ++ " scanned"
 
 -- This is to put Nothings to the end of a sorted list
 newtype Fifo = Fifo (Maybe Time.UTCTime) deriving Eq