diff --git a/_locales/de/messages.json b/_locales/de/messages.json
index e622196..e0f4c05 100644
--- a/_locales/de/messages.json
+++ b/_locales/de/messages.json
@@ -135,6 +135,18 @@
 		"message": "Wollen Sie das Auslesen des rot umrandeten <canvas> erlauben?",
 		"description": ""
 	},
+	"askForAudioPermission": {
+		"message": "Wollen Sie die Audio-API erlauben?",
+		"description": ""
+	},
+	"askForAudioInputPermission": {
+		"message": "Wollen Sie das Schreiben in über die Audio-API erlauben?",
+		"description": ""
+	},
+	"askForAudioReadoutPermission": {
+		"message": "Wollen Sie das Auslesen über die Audio-API erlauben?",
+		"description": ""
+	},
 	"askOnlyOnce_title": {
 		"message": "Nur einmal nachfragen",
 		"description": ""
diff --git a/_locales/en/messages.json b/_locales/en/messages.json
index 5231541..3ed4e6c 100644
--- a/_locales/en/messages.json
+++ b/_locales/en/messages.json
@@ -135,6 +135,18 @@
 		"message": "Do you want to allow the readout of the red bordered <canvas>?",
 		"description": ""
 	},
+	"askForAudioPermission": {
+		"message": "Do you want to allow the audio API?",
+		"description": ""
+	},
+	"askForAudioInputPermission": {
+		"message": "Do you want to allow audio-API input?",
+		"description": ""
+	},
+	"askForAudioReadoutPermission": {
+		"message": "Do you want to allow audio readout?",
+		"description": ""
+	},
 	"askOnlyOnce_title": {
 		"message": "Ask only once",
 		"description": ""
diff --git a/lib/askForPermission.js b/lib/askForPermission.js
index 34f01ec..1769134 100644
--- a/lib/askForPermission.js
+++ b/lib/askForPermission.js
@@ -15,11 +15,11 @@
 	const {parseErrorStack} = require("./callingStack");
 	
 	// Check canvas appearance
-	function canvasAppearance(window, context){
+	function canvasAppearance(window, api, context){
 		var oldBorder = false;
 		var canvas = false;
 		var inDOM = null;
-		if (context){
+		if (api === "canvas" && context){
 			var nodeName;
 			try {
 				nodeName = context.nodeName;
@@ -44,9 +44,9 @@
 		}
 		return {
 			canvas: canvas,
-			askCategory: canvas? (inDOM? "visible": "invisible"): "nocanvas",
+			askCategory: canvas? (inDOM? "visible": "invisible"): (api === "canvas"? "nocanvas": api),
 			get text(){
-				var text = canvas? (this.visible? "visible": "invisible"): "nocanvas";
+				var text = canvas? (this.visible? "visible": "invisible"): (api === "canvas"? "nocanvas": api);
 				Object.defineProperty(this, "text", {value: text});
 				return text;
 			},
@@ -85,7 +85,8 @@
 					askText: {
 						visible: _("askForVisiblePermission"),
 						invisible: _("askForInvisiblePermission"),
-						nocanvas: _("askForPermission")
+						nocanvas: _("askForPermission"),
+						audio: _("askForAudioPermission")
 					},
 					askStatus: {
 						alreadyAsked: {},
@@ -96,7 +97,8 @@
 					askText: {
 						visible: _("askForVisibleInputPermission"),
 						invisible: _("askForInvisibleInputPermission"),
-						nocanvas: _("askForInputPermission")
+						nocanvas: _("askForInputPermission"),
+						audio: _("askForAudioInputPermission")
 					},
 					askStatus: {
 						alreadyAsked: {},
@@ -107,7 +109,8 @@
 					askText: {
 						visible: _("askForVisibleReadoutPermission"),
 						invisible: _("askForInvisibleReadoutPermission"),
-						nocanvas: _("askForReadoutPermission")
+						nocanvas: _("askForReadoutPermission"),
+						audio: _("askForAudioReadoutPermission")
 					},
 					askStatus: {
 						alreadyAsked: {},
@@ -120,15 +123,16 @@
 		}
 	}
 	
-	scope.ask = function({window, type, canvas, errorStack}, {_, prefs}){
+	scope.ask = function({window, type, api, canvas, errorStack}, {_, prefs}){
 		var answer;
 		var askMode = getAskMode(window, type, _);
 		var askStatus = askMode.askStatus;
-		var appearance = canvasAppearance(window, canvas);
-		if (prefs("askOnlyOnce") !== "no" && askStatus.alreadyAsked[appearance.askCategory]){
+		var appearance = canvasAppearance(window, api, canvas);
+		var category = appearance.askCategory;
+		if (prefs("askOnlyOnce") !== "no" && askStatus.alreadyAsked[category]){
 			// already asked
 			appearance.reset();
-			return askStatus.answer[appearance.askCategory];
+			return askStatus.answer[category];
 		}
 		else {
 			let imgContainer = null;
@@ -171,6 +175,9 @@
 			}
 			// asking
 			var msg = askMode.askText[appearance.text];
+			
+			// visible vs invisible is only calculated here correctly
+			category = appearance.text;
 			if (prefs("showCallingFile")){
 				msg += parseErrorStack(errorStack).toString(_);
 			}
@@ -183,13 +190,13 @@
 				["context", "readout", "input"].forEach(function(type){
 					var askMode = getAskMode(window, type, _);
 					var askStatus = askMode.askStatus;
-					askStatus.alreadyAsked[appearance.text] = true;
-					askStatus.answer[appearance.text] = answer;
+					askStatus.alreadyAsked[category] = true;
+					askStatus.answer[category] = answer;
 				});
 			}
 			else {
-				askStatus.alreadyAsked[appearance.text] = true;
-				askStatus.answer[appearance.text] = answer;
+				askStatus.alreadyAsked[category] = true;
+				askStatus.answer[category] = answer;
 			}
 			appearance.reset();
 			return answer;
diff --git a/lib/intercept.js b/lib/intercept.js
index 4ccc60b..7cd0688 100644
--- a/lib/intercept.js
+++ b/lib/intercept.js
@@ -232,10 +232,12 @@
 												funcStatus.mode = ask({
 													window: window,
 													type: changedFunction.type,
+													api: changedFunction.api,
 													canvas: this instanceof HTMLCanvasElement?
 														this:
 														(
-															this.canvas instanceof HTMLCanvasElement?
+															this &&
+															(this.canvas instanceof HTMLCanvasElement)?
 																this.canvas:
 																false
 														),