diff --git a/HACKING b/HACKING
index ac378e5..62c79a3 100644
--- a/HACKING
+++ b/HACKING
@@ -11,10 +11,16 @@ you started:
      the regression tests suite (`make check') and ensure that your code does
      not break other features.
      http://cutter.sourceforge.net/
-     To cover all tests you'll need some blank cards with default settings:
-     * DESFire EV1 4k or larger (2k is too small)
-     * MIFARE Ultralight C
-     * MIFARE Classic
+     To cover all tests you'll need several blank cards:
+     * MIFARE Ultralight
+     * MIFARE Ultralight C with default key (BREAKMEIFYOUCAN!)
+     * MIFARE Classic 4k with default keys (FFFFFFFFFF)
+     * DESFire EV1 4k with default PICC key (0000000000000000)
+     After "make check", you can run sub-sets of tests directly with cutter:
+     $ cutter -n /ultralight/ test
+     $ cutter -n /classic/ test
+     $ cutter -n /desfire/ test
+
 
   2. Follow style conventions
      The source code of the library trend to follow some conventions so that it