diff --git a/prepare-card.sh b/prepare-card.sh
new file mode 100644
index 0000000..28ebeaf
--- /dev/null
+++ b/prepare-card.sh
@@ -0,0 +1,42 @@
+#!/usr/bin/env bash
+
+# Author: Dmitri Popov, dmpop@linux.com
+# License: GPLv3 https://www.gnu.org/licenses/gpl-3.0.txt
+
+if [ -z "$1" ] && [ -z "$2" ]; then
+    echo "ERROR: Specify image file and device name"
+    echo "E.g.: $0 /path/to/foo.img /dev/sdb"
+    exit 1
+fi
+
+echo "Writing the image file..."
+echo
+sudo dd if="$1" of="$2" bs=1M status=progress
+
+sudo mount "$2"1 /mnt
+sudo touch /mnt/ssh
+sudo umount /mnt
+
+sudo mount "$2"2 /mnt
+sudo mv /mnt/etc/wpa_supplicant/wpa_supplicant.conf /mnt/etc/wpa_supplicant/wpa_supplicant.conf.bak
+
+echo "Enter the name of the wireless network: "
+read SSID
+echo "Enter the wireless network password: "
+read -s PASS
+cat >$HOME/wpa_supplicant.conf <<EOF
+ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
+update_config=1
+
+network={
+	ssid="$SSID"
+	psk="$PASS"
+	proto=RSN
+	key_mgmt=WPA-PSK
+	pairwise=CCMP
+	auth_alg=OPEN
+}
+EOF
+sudo mv $HOME/wpa_supplicant.conf /mnt/etc/wpa_supplicant/wpa_supplicant.conf
+sudo umount /mnt
+echo "All done!"