diff --git a/minigrid/device_interface.py b/minigrid/device_interface.py
index d938fa8..7c46c6e 100644
--- a/minigrid/device_interface.py
+++ b/minigrid/device_interface.py
@@ -21,6 +21,42 @@ def _wrap_binary(binary):
     return b'qS' + binary.hex().encode('ascii') + b'EL'
 
 
+def erase_card(session, cache):
+    """Erase card."""
+    sector_1 = b''.join((
+        bytes(45),
+    ))
+    sector_2 = b''.join((
+        bytes(32),
+    ))
+    naive_payload = sector_1 + sector_2
+    actual_payload = b''.join((
+        naive_payload[:15],
+        (sum(naive_payload[:15]) & 0xFF).to_bytes(1, 'big'),
+        naive_payload[15:30],
+        (sum(naive_payload[15:30]) & 0xFF).to_bytes(1, 'big'),
+        naive_payload[30:45],
+        (sum(naive_payload[30:45]) & 0xFF).to_bytes(1, 'big'),
+        naive_payload[45:60],
+        (sum(naive_payload[45:60]) & 0xFF).to_bytes(1, 'big'),
+        naive_payload[60:75],
+        (sum(naive_payload[60:75]) & 0xFF).to_bytes(1, 'big'),
+        naive_payload[75:77],
+        bytes(13),
+        (sum(naive_payload[75:77]) & 0xFF).to_bytes(1, 'big'),
+    ))
+    cache.set('device_info', _wrap_binary(actual_payload), 30)
+    write_result = OrderedDict()
+    write_result['card_type'] = 'Blank Card'
+    write_result['future_time'] = str(int(time.time())+30)
+    cache.set('write_info', json_encode(write_result), 30)
+    notify = OrderedDict()
+    notify['notification'] = 'Erasing Card...'
+    notify['type'] = 'alert-warning'
+    cache.set('notification', json_encode(notify), 30)
+    cache.delete('received_info')
+
+
 def write_vendor_card(session, cache, key, minigrid_id, payment_id, vendor):
     """Write information to a vendor ID card."""
     card_produce_time = int(time.time())
diff --git a/minigrid/handlers.py b/minigrid/handlers.py
index 15f4db1..34d6a7f 100644
--- a/minigrid/handlers.py
+++ b/minigrid/handlers.py
@@ -1,4 +1,5 @@
 """Handlers for the URL endpoints."""
+import time
 from binascii import unhexlify
 from collections import OrderedDict
 from datetime import datetime, timedelta
@@ -26,7 +27,7 @@
 import tornado.ioloop
 
 from minigrid.device_interface import (
-    write_maintenance_card_card,
+    write_maintenance_card_card, erase_card,
     write_vendor_card, write_customer_card, write_credit_card)
 import minigrid.error
 import minigrid.models as models
@@ -52,6 +53,7 @@
     'B': 'Customer ID Card',
     'C': 'Credit Card',
     'D': 'Maintenance Card',
+    'E': 'Blank Card',
 }
 
 
@@ -60,6 +62,7 @@
     'B': 'Customer User ID',
     'C': 'Credit Amount',
     'D': 'Maintenance Card ID',
+    'E': 'Card Type',
 }
 
 
@@ -321,6 +324,12 @@ def get(self):
         http_protocol = 'https' if options.minigrid_https else 'http'
         self.render('cards.html', http_protocol=http_protocol)
 
+    @tornado.web.authenticated
+    def post(self):
+        """Erase card."""
+        erase_card(self.session, cache)
+        self.redirect(f'/cards')
+
 
 class MinigridHandler(BaseHandler):
     """Handlers for a minigrid view."""
@@ -807,12 +816,19 @@ def _pack_into_dict(session, binary):
     if system_id == 'up':
         logging.info(f'Operator Box is {system_id}')
         return json_encode(result)
+    else:
+        cache.set('device_active', 1, 10)
+        cache.set('received_info', json_encode(result), 10)
     card_type = sector_1[4:5].decode('ascii')
     logging.info(f'Card Type: {card_type}')
     try:
         result['Card Type'] = _card_type_dict[card_type]
     except KeyError:
         if card_type == '\x00':
+            found = OrderedDict()
+            found['Card Type'] = 'Blank Card'
+            found['Connected Device'] = device_address.hex()
+            cache.set('received_info', json_encode(found), 10)
             raise minigrid.error.CardReadError('This card appears blank')
         raise minigrid.error.CardReadError(
             f'This card appears to have the invalid card type {card_type}')
@@ -1033,6 +1049,15 @@ def _verify_written_card(session):
                             mc_maintenance_card_card_id=mcid,
                         ))
                     cache.delete('write_info')
+            elif type == 'E':  # Blank card
+                future = write_result['future_time']
+                logging.info(f'future: {future}')
+                if int(future) > int(time.time()):
+                    notify['notification'] = 'Card Blank'
+                    notify['type'] = 'alert-success'
+                    cache.set('notification', json_encode(notify), 10)
+                    logging.info('Card Erased')
+                    cache.delete('write_info')
             else:
                 # Error case for card type
                 notify['notification'] = 'Invalid Card Type'
diff --git a/minigrid/templates/cards.html b/minigrid/templates/cards.html
index a9fb7d7..0510ecd 100644
--- a/minigrid/templates/cards.html
+++ b/minigrid/templates/cards.html
@@ -1,17 +1,36 @@
 {% extends 'base.html' %}
 
 {% block body %}
+  <div class="container-fluid notification-alert">
+  </div>
   <div class="full-page-content">
     <div class="center-wrap">
       {% if message is not None %}
         <p><strong>{{ message }}</strong></p>
       {% end %}
       <h2>Read and validate cards:</h2>
+      <div class="device-info">
+        <div class="card-info-header">
+          <span>Device Info</span>
+        </div>
+      </div>
+      <br>
       <div class="card-info">
         <div class="card-info-header">
           <span>Card Info</span>
         </div>
       </div>
+      <div>
+        <form action="/cards" method="POST">
+          {% module xsrf_form_html() %}
+          <input type="hidden" name="action" value="write" />
+          {% if device_active %}
+            <input class="card-value" type="submit" value="Erase card" />
+          {% else %}
+            <input class="card-value" type="submit" value="Erase card" title="Touch card to reader" disabled/>
+          {% end %}
+        </form>
+      </div>
     </div>
   </div>
   <footer><a href="/">&laquo; Return to minigrid index</a></footer>
@@ -19,6 +38,6 @@ <h2>Read and validate cards:</h2>
   <script>
     var http_protocol = '{{ http_protocol }}';
   </script>
-  <script type="text/javascript" src="{{ static_url('dist/read_card.bundle.js') }}"></script>
+  <script type="text/javascript" src="{{ static_url('dist/write_card.bundle.js') }}"></script>
 
 {% end %}
diff --git a/prod/docker-compose.yml b/prod/docker-compose.yml
index d515931..4668daa 100644
--- a/prod/docker-compose.yml
+++ b/prod/docker-compose.yml
@@ -1,7 +1,7 @@
 version: '2'
 services:
   minigrid:
-    image: selcolumbia/minigrid-server:0.3.2
+    image: selcolumbia/minigrid-server:0.3.3
     command: ./prod/run.sh --db_host=db --redis_url=redis://redis:6379/0 --minigrid-website-url=https://www.example.com
     depends_on:
       - redis
diff --git a/prod/install.sh b/prod/install.sh
index 3a2cc24..4fb9775 100755
--- a/prod/install.sh
+++ b/prod/install.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env sh
-# Minigrid Server installer for version 0.3.2
+# Minigrid Server installer for version 0.3.3
 set -e
 
 # Do you have docker installed?
@@ -108,8 +108,8 @@ $SUDO openssl dhparam -out /etc/letsencrypt/live/$LETSENCRYPT_DIR/dhparam.pem 20
 printf "========================================\n"
 printf " Generating configuration               \n"
 printf "========================================\n"
-$CURL -L https://raw.githubusercontent.com/SEL-Columbia/minigrid-server/0.3.2/prod/docker-compose.yml > docker-compose.yml
-$CURL -L https://raw.githubusercontent.com/SEL-Columbia/minigrid-server/0.3.2/prod/nginx.conf > nginx.conf
+$CURL -L https://raw.githubusercontent.com/SEL-Columbia/minigrid-server/0.3.3/prod/docker-compose.yml > docker-compose.yml
+$CURL -L https://raw.githubusercontent.com/SEL-Columbia/minigrid-server/0.3.3/prod/nginx.conf > nginx.conf
 
 sed -i s/www.example.com/$LETSENCRYPT_DIR/g docker-compose.yml
 sed -i s/www.example.com/$LETSENCRYPT_DIR/g nginx.conf
@@ -147,7 +147,7 @@ printf "========================================\n"
 # The --post-hook should just be docker restart $NGINX_CONTAINER_NAME... but
 # the container can't run the docker command properly.
 # So /tmp/renewed serves as a sentinel
-CRON_CMD="mkdir -p /tmp/letsencrypt && "\
+CRON_CMD_1="mkdir -p /tmp/letsencrypt && "\
 "docker run -i --rm --name certbot"\
 " -v /etc/letsencrypt:/etc/letsencrypt:Z"\
 " -v /var/lib/letsencrypt:/var/lib/letsencrypt:Z"\
@@ -155,7 +155,13 @@ CRON_CMD="mkdir -p /tmp/letsencrypt && "\
 " -v /var/log/letsencrypt:/var/log/letsencrypt:Z"\
 " quay.io/letsencrypt/letsencrypt renew --quiet --webroot --webroot-path /tmp/letsencrypt;"\
 " docker restart $NGINX_CONTAINER_NAME"
+# Backup database every week at 2:15
+DB_CONTAINER_NAME=$($DOCKER_COMPOSE ps | grep _db_ | cut -d' ' -f1)
+CRON_CMD_2="mkdir -p /db-bak && "\
+"docker exec $DB_CONTAINER_NAME pg_dump -U postgres minigrid > /db-bak/$LETSENCRYPT_DIR-db-$(date +%d-%m-%y).pg"
 # https://certbot.eff.org/#ubuntuxenial-nginx recommends running this twice a day on random minute within the hour
-CRON_JOB="00 01,13 * * * sleep \$(expr \$RANDOM \% 59 \* 60); $CRON_CMD"
-crontab -l | fgrep -i -v "$CRON_CMD" | { cat; echo "$CRON_JOB"; } | crontab -
+CRON_JOB_1="00 01,13 * * * sleep \$(expr \$RANDOM \% 59 \* 60); $CRON_CMD_1"
+CRON_JOB_2="15 2 * * 0 $CRON_CMD_2"
+crontab -l | fgrep -i -v "$CRON_CMD_1" | { cat; echo "$CRON_JOB_1"; } | crontab -
+crontab -l | fgrep -i -v "$CRON_CMD_2" | { cat; echo "$CRON_JOB_2"; } | crontab -
 crontab -l