diff --git a/common/doordeck.js b/common/doordeck.js
index b4ef37b..9e0e823 100644
--- a/common/doordeck.js
+++ b/common/doordeck.js
@@ -1,4 +1,4 @@
-import { AUTH_TOKEN } from './constants'
+import { AUTH_TOKEN, EPHEMERAL_PUBKEY, EPHEMERAL_PRIKEY, CERT } from './constants'
 import ephemaralKeyGenerator from './services/ephemeralKeyGenerator'
 import certificate from './services/certificate'
 import libSodium from 'libsodium-wrappers'
@@ -14,20 +14,29 @@ const isLoaded = function (authToken) {
   } else return false
 }
 
-const doordeckInit = function (authToken) {
+const doordeckInit = function (authToken, reset = false) {
+  if (reset) {
+    doordeckReset();
+  }
   return new Promise (function(resolve, reject) {
     libSodium.ready.then(function () {
-      if (isLoaded()) resolve({state: 'success', message: 'Doordeck is already initialised.'})
-      if (authToken !== null && authToken !== undefined) {
-        storeAuthToken(authToken)
-        ephemaralKeyGenerator.generateKeys().then(keys => {
-          certificate.getCertificate(keys).then(response => {
-            resolve(response)
-          }, fail => {
-            reject(fail)
+      if (isLoaded(authToken)) {
+        resolve({state: 'success', message: 'Doordeck is already initialised.'});
+      } else {
+        if (authToken !== null && authToken !== undefined) {
+          storeAuthToken(authToken)
+          certificate.resetCert();
+          ephemaralKeyGenerator.generateKeys().then(keys => {
+            certificate.getCertificate(keys).then(response => {
+              resolve(response)
+            }, fail => {
+              reject(fail)
+            })
           })
-        })
-      } else reject({state: 'error', message: 'No Auth Token provided.'})
+        } else {
+          reject({state: 'error', message: 'No Auth Token provided.'});
+        }
+      }
     })
   })
 }
@@ -64,11 +73,17 @@ const getStoredAuthToken = function () {
   return localStorage[AUTH_TOKEN]
 }
 
-
 const verifyCode = function (code) {
   return certificate.verifyCode(code, ephemaralKeyGenerator.retrieveSavedKeys())
 }
 
+const doordeckReset = function () {
+    localStorage.removeItem(AUTH_TOKEN);
+    localStorage.removeItem(CERT);
+    localStorage.removeItem(EPHEMERAL_PRIKEY);
+    localStorage.removeItem(EPHEMERAL_PUBKEY);
+}
+
 export default {
   doordeckInit,
   verifyCode,
diff --git a/common/services/certificate.js b/common/services/certificate.js
index cf536f6..b84dca5 100644
--- a/common/services/certificate.js
+++ b/common/services/certificate.js
@@ -9,6 +9,9 @@ const retrieveSavedCert = function () {
 const storeCert = function (cert) {
   localStorage[CERT] = JSON.stringify(cert)
 }
+const resetCert = function () {
+  localStorage[CERT] = null;
+}
 const registerCertificate = function (pubKey) {
   var ephKey = doordeck.libSodium.to_base64(pubKey, doordeck.libSodium.base64_variants.ORIGINAL)
   return axios.post(BASE_URL + '/auth/certificate', {
@@ -53,6 +56,12 @@ export default {
               if (response.data.method !== undefined && response.data.method !== null) {
                 reject({state: 'verify', method: response.data.method})
               } else reject({state: 'error', message: 'Failed to send 2FA request'})
+            }, fail => {
+              if (fail.response.status === 429) {
+                reject({state: 'error', message: 'Too many current pending verifications', code: 429});
+              } else {
+                reject({state: 'error', message: 'Failed to send 2FA request'});
+              }
             })
           } else {
             reject({state: 'error', message: 'Failed to get certificate'})
@@ -74,5 +83,6 @@ export default {
       })
     })
   },
-  retrieveSavedCert
+  retrieveSavedCert,
+  resetCert
 }
diff --git a/common/services/deviceOperation.js b/common/services/deviceOperation.js
index 1069019..bcc99b1 100644
--- a/common/services/deviceOperation.js
+++ b/common/services/deviceOperation.js
@@ -1,5 +1,5 @@
 import axios from 'axios'
-import { BASE_URL, CERT } from '../constants'
+import { BASE_URL, CERT, AUTH_TOKEN } from '../constants'
 import ephemaralKeyGenerator from './ephemeralKeyGenerator'
 import doordeck from '../doordeck'
 
@@ -34,8 +34,8 @@ var executor = function (deviceId, operation) {
     {
       skipAuthorization: true,
       headers: {
-        'Authorization': 'Bearer ' + localStorage.token,
-        'Content-Type': 'application/json'
+        'Authorization': 'Bearer ' + localStorage[AUTH_TOKEN],
+        'Content-Type': 'application/jwt'
       },
       timeout: 10000
     }
@@ -44,7 +44,7 @@ var executor = function (deviceId, operation) {
 var getDoordeckUserByEmail = function (userEmail, visitor) {
   return axios.post(baseUrl + '/share/invite/' + userEmail + '?visitor=' + visitor, null, {
     headers: {
-      'Authorization': 'Bearer ' + localStorage.token,
+      'Authorization': 'Bearer ' + localStorage[AUTH_TOKEN],
       'Content-Type': 'application/json'
     }
   }).then(response => {
@@ -54,7 +54,7 @@ var getDoordeckUserByEmail = function (userEmail, visitor) {
 var getUserByEmail = function (email) {
   return axios.post(baseUrl + '/directory/query', {'email': email}, {
     headers: {
-      'Authorization': 'Bearer ' + localStorage.token,
+      'Authorization': 'Bearer ' + localStorage[AUTH_TOKEN],
       'Content-Type': 'application/json'
     }
   }).then(response => {
@@ -64,7 +64,7 @@ var getUserByEmail = function (email) {
 var getUserById = function (id) {
   return axios.post(baseUrl + '/directory/query', {'localKey': id}, {
     headers: {
-      'Authorization': 'Bearer ' + localStorage.token,
+      'Authorization': 'Bearer ' + localStorage[AUTH_TOKEN],
       'Content-Type': 'application/json'
     }
   }).then(response => {
@@ -200,7 +200,7 @@ export default {
     return axios.get(baseUrl + '/tile/' + tileId, {
       headers: {
         'Accept': 'application/vnd.doordeck.api-v3+json',
-        'Authorization': 'Bearer ' + localStorage.token,
+        'Authorization': 'Bearer ' + localStorage[AUTH_TOKEN],
         'Content-Type': 'application/json'
       }
     })
@@ -208,7 +208,7 @@ export default {
   link (deviceId, tileId) {
     return axios.put(baseUrl + '/device/' + deviceId + '/tile/' + tileId, null, {
       headers: {
-        'Authorization': 'Bearer ' + localStorage.token,
+        'Authorization': 'Bearer ' + localStorage[AUTH_TOKEN],
         'Content-Type': 'application/json'
       }
     })
@@ -216,7 +216,7 @@ export default {
   delink (deviceId, tileId) {
     return axios.delete(baseUrl + '/device/' + deviceId + '/tile/' + tileId, {
       headers: {
-        'Authorization': 'Bearer ' + localStorage.token,
+        'Authorization': 'Bearer ' + localStorage[AUTH_TOKEN],
         'Content-Type': 'application/json'
       }
     })