diff --git a/Makefile b/Makefile
index 46380fd..c5c562e 100644
--- a/Makefile
+++ b/Makefile
@@ -42,22 +42,24 @@ BBSTOOL-DEPS=bbstool.scm testing.import.scm listing.import.scm		\
 	ansi.import.scm member-file.import.scm				\
 	command-line.import.scm members-base.import.scm			\
 	utils.import.scm primes.import.scm member-record.import.scm	\
-	configuration.import.scm progress.import.scm table.import.scm
+	configuration.import.scm progress.import.scm table.import.scm	\
+	cards.import.scm
 
 BBSTOOL-SOURCES=bbstool.scm testing.scm listing.scm dictionary.scm	\
 	month.scm period.scm ansi.scm member-file.scm			\
 	command-line.scm members-base.scm utils.scm primes.scm		\
-	member-record.scm configuration.scm progress.scm table.scm
+	member-record.scm configuration.scm progress.scm table.scm	\
+	cards.scm
 
 BBSTOOL-OBJS=testing.o listing.o month.o period.o ansi.o	\
 		member-file.o dictionary.o command-line.o	\
 		members-base.o utils.o primes.o member-record.o	\
-		configuration.o progress.o table.o
+		configuration.o progress.o table.o cards.o
 
 BBSTOOL-SHARED=testing.so listing.so month.so period.so ansi.so		\
 		member-file.so dictionary.so command-line.so		\
 		members-base.so utils.so primes.so member-record.so	\
-		configuration.so progress.so table.so
+		configuration.so progress.so table.so cards.so
 
 .PHONY: imports
 imports: $(BBSTOOL-DEPS)
@@ -188,3 +190,9 @@ TABLE-SOURCES=table.scm ansi.import.scm testing.import.scm	\
 table.so: table.o
 table.o: table.import.scm
 table.import.scm: $(TABLE-SOURCES)
+
+CARDS-SOURCES=cards.scm
+
+cards.so: cards.o
+cards.o: cards.import.scm
+cards.import.scm: $(CARDS-SOURCES)
diff --git a/bbstool.scm b/bbstool.scm
index 4625a12..632e700 100644
--- a/bbstool.scm
+++ b/bbstool.scm
@@ -38,7 +38,8 @@ CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 	primes
 	member-record
 	configuration
-	table)
+	table
+	cards)
 
 ;; Print banner
 (print "bbstool 0.4 (c) 2023 Brmlab, z.s.")
@@ -84,7 +85,8 @@ CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  (-tstyle (style) "Use given table style: debug, ascii, unicode"
 	  (*table-border-style* (string->symbol style)))
  (-gencards (file:cards file:desfires) "Generates brmdoor-compatible card files"
-	    (print "TODO: " file:cards " " file:desfires))
+	    (-action- 'export-cards)
+	    (-fname- (list file:cards file:desfires)))
  )
 
 ;; Run tests
diff --git a/cards.scm b/cards.scm
new file mode 100644
index 0000000..e62a577
--- /dev/null
+++ b/cards.scm
@@ -0,0 +1,39 @@
+;;
+;; cards.scm
+;;
+;; Cards exporter as required by brmdoor.
+;;
+;; ISC License
+;;
+;; Copyright 2023 Brmlab, z.s.
+;; Dominik Pantůček <dominik.pantucek@trustica.cz>
+;;
+;; Permission to use, copy, modify, and/or distribute this software
+;; for any purpose with or without fee is hereby granted, provided
+;; that the above copyright notice and this permission notice appear
+;; in all copies.
+;; 
+;; THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
+;; WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+;; WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
+;; AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
+;; CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+;; OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+;; NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+;; CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+;;
+
+(declare (unit cards))
+
+(module
+ cards
+ (
+  cards-export
+  )
+
+ (import scheme)
+
+ (define (cards-export mb cardsfn desfirefn)
+   #f)
+
+ )