diff --git a/metadata/com.MarcosDiez.shareviahttp.txt b/metadata/com.MarcosDiez.shareviahttp.txt
index 4002834490..3f6ab69fff 100644
--- a/metadata/com.MarcosDiez.shareviahttp.txt
+++ b/metadata/com.MarcosDiez.shareviahttp.txt
@@ -6,15 +6,15 @@ Issue Tracker:http://code.google.com/p/share-via-http/issues/list
 
 Summary:File sharing tool
 Description:
+N.B The app doesn't make an entry in the app list: only the share menu.
+
 Share files from your phone to one or many, quickly and easily. Just share the item via the
 Share Menu and a mini web server will  be started allowing others to download the
 file. If there are multiple files a zip archive will be created on the fly.
-If Barcode Scanner is installed a QR code is produced with the URL. It will 
+If [[com.google.zxing.client.android]] is installed a QR code can be produced with the URL. It will 
 only work if the recipient is on the same LAN if you use WiFI but should work anywhere 
 if you use  GSM (2G/3G), though more slowly. The server can be stopped at any
 time from the screen that shows the URL (press the back button if you're on the barcode).
-
-N.B The app doesn't make an entry in the app list: only the share menu.
 .
 
 Repo Type:hg
diff --git a/metadata/com.ivanvolosyuk.sharetobrowser.txt b/metadata/com.ivanvolosyuk.sharetobrowser.txt
index 66b03044af..b293da9381 100644
--- a/metadata/com.ivanvolosyuk.sharetobrowser.txt
+++ b/metadata/com.ivanvolosyuk.sharetobrowser.txt
@@ -6,6 +6,8 @@ Issue Tracker:http://code.google.com/p/share-to-browser/issues/list
 
 Summary:Send web pages to your computer
 Description:
+You will need [[com.google.zxing.client.android]] to be installed to use this.
+
 First visit http://send-to-computer.appspot.com on your computer and make sure
 popup blocking is disabled. Scan the barcode given on the screen (the app 
 remembers the unique id at the end of the url so that it can identify your 
diff --git a/metadata/org.ale.scanner.zotero.txt b/metadata/org.ale.scanner.zotero.txt
index fc932d7b79..81f87311fc 100644
--- a/metadata/org.ale.scanner.zotero.txt
+++ b/metadata/org.ale.scanner.zotero.txt
@@ -6,8 +6,11 @@ Issue Tracker:https://github.com/jmschanck/Scanner-For-Zotero/issues
 
 Summary:Scanner for Zotero
 Description:
+You will need [[com.google.zxing.client.android]] to be installed
+to make the most of this app.
+
 Scanner For Zotero brings Zotero's magic wand tool out into the physical world. Scan the ISBN 
-barcode on any book, and Scanner For Zotero will fetch that item's bibliographic information 
+barcode on any book and Scanner For Zotero will fetch that item's bibliographic information 
 from the web and allow you to add it to your Zotero library.
 .
 
diff --git a/metadata/org.curiouscreature.android.shelves.txt b/metadata/org.curiouscreature.android.shelves.txt
index 64cc00dc76..f3caa84141 100644
--- a/metadata/org.curiouscreature.android.shelves.txt
+++ b/metadata/org.curiouscreature.android.shelves.txt
@@ -7,7 +7,8 @@ Issue Tracker:http://code.google.com/p/shelves/issues/list
 Summary:Book collection manager
 Description:
 Shelves lets you manage and search your collection of books from your phone.
-You can add books by scanning their barcodes, using Web searches or entering
+You can add books by scanning their barcodes (if you have 
+[[com.google.zxing.client.android]] installed), using Web searches or entering
 information manually.
 .
 
diff --git a/metadata/uk.ac.cam.cl.dtg.android.barcodebox.txt b/metadata/uk.ac.cam.cl.dtg.android.barcodebox.txt
index aa89aa1e96..046b2383d1 100644
--- a/metadata/uk.ac.cam.cl.dtg.android.barcodebox.txt
+++ b/metadata/uk.ac.cam.cl.dtg.android.barcodebox.txt
@@ -6,7 +6,12 @@ Issue Tracker:https://github.com/ucam-cl-dtg/barcodebox/issues
 
 Summary:Barcode Box
 Description:
-Records a list of barcodes when you scan them and reminds you if you've seen it before. Useful for remembering which books you've read or things you've seen in the shop. It features a rapid scanning mode, and allows to export the history of barcodes to CSV. Uses Barcode Scanner as a backend. 
+You will need [[com.google.zxing.client.android]] to be installed.
+
+Records a list of barcodes when you scan them and reminds you if you've seen it 
+before. Useful for remembering which books you've read or things you've seen 
+in the shop. It features a rapid scanning mode, and allows to export the 
+history of barcodes to CSV. 
 .
 
 Repo Type:git