diff --git a/Signatures.md b/Signatures.md
index 6b7e729..7de8f54 100644
--- a/Signatures.md
+++ b/Signatures.md
@@ -1,6 +1,10 @@
-While games can be added to the server without them, it is recommended adding some signature DAT files beforehand to allow for better matching of ROMs to games.
+Signatures are used to match a ROM to a game name using the hash of the ROM (MD5 or SHA1). Without access to a signature database, Gaseous will attempt to "guess" the game name from the file name.
 
-These signature DAT files contain a list of titles with hashes for many of the ROM images that have been found by the community.
+# Local Signatures
+
+This is the default method.
+
+Local signatures are also always checked if no other source (see below) is available, enabled, or able to provide a match.
 
 Currently supported DAT's:
 * TOSEC: https://www.tosecdev.org/downloads/category/56-2023-01-23
@@ -8,7 +12,7 @@ Currently supported DAT's:
 
 If there are other DAT's you'd like to see support for, please raise an issue with a link to the DAT's.
 
-## Adding signature DAT files
+## Adding signature DAT files to the local database
 ### TOSEC
 1. Download the DAT files from the source website. For example; from https://www.tosecdev.org/downloads/category/56-2023-01-23
 2. Extract the archive
@@ -22,4 +26,16 @@ If there are other DAT's you'd like to see support for, please raise an issue wi
 ### MAME MESS
 1. Download the DAT files from the source website. For example; from https://www.progettosnaps.net/dats/MAME
 2. Extract the archive
-3. Copy the file name ``MAME 0.257 (mess).dat`` files to ``~/.gaseous-server/Data/Signatures/MAME MESS/``
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+3. Copy the file name ``MAME 0.257 (mess).dat`` files to ``~/.gaseous-server/Data/Signatures/MAME MESS/``
+
+# Other Signature Sources
+
+**Note:** This is still experimental.
+
+## Hasheous
+
+Hasheous is an open source project that provides an API that Gaseous can access to match a ROM hash to a game title. It also (at the time of writing) provides IGDB match information for hashes that have been submitted before. This can result in a much faster match when importing ROMs.
+
+There are two config.json options required to enable:
+* ``SignatureSource`` set to ``Hasheous``
+* ``HasheousHost`` set to a Hasheous server URL. The current project server is hosted at ``https://hasheous.org/``
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