diff --git a/src/devices/Keyboard.test.ts b/src/devices/Keyboard.test.ts
index cea079c..640450f 100644
--- a/src/devices/Keyboard.test.ts
+++ b/src/devices/Keyboard.test.ts
@@ -25,19 +25,19 @@ describe('Keyboard', () => {
 	describe('getControl', () => {
 		it('should return a ButtonInputControl', () => {
 			const keyboard = new Keyboard();
-			const control = keyboard.getControl('a');
+			const control = keyboard.getControl('KeyA');
 			expect(control).toBeInstanceOf(ButtonInputControl);
 		});
 
 		it('should set device property on control', () => {
 			const keyboard = new Keyboard();
-			const control = keyboard.getControl('a');
+			const control = keyboard.getControl('KeyA');
 			expect(control.device).toBe(keyboard);
 		});
 
 		it('should pass options to control constructor', () => {
 			const keyboard = new Keyboard();
-			const control = keyboard.getControl('a', {
+			const control = keyboard.getControl('KeyA', {
 				pressPoint: 0.7,
 				name: 'controlName'
 			});
@@ -47,7 +47,7 @@ describe('Keyboard', () => {
 
 		it('should set have no children, even if in options', () => {
 			const keyboard = new Keyboard();
-			const control = keyboard.getControl('a', <any>{
+			const control = keyboard.getControl('KeyA', <any>{
 				children: [
 					new ButtonInputControl(() => 0)
 				]
@@ -58,13 +58,13 @@ describe('Keyboard', () => {
 		describe.each([
 			[
 				'name is key, no filter', // test title
-				'w', // name argument
+				'KeyW', // name argument
 				undefined, // options argument
 				{ // expected keys
 					w: true,
 					x: false
 				},
-				'key:w' // expected name
+				'key:KeyW' // expected name
 			],
 			[
 				'no name or filter - any key',
@@ -79,7 +79,7 @@ describe('Keyboard', () => {
 			[
 				'filter is string, different from name',
 				'w key',
-				{ filter: 'w' },
+				{ filter: 'KeyW' },
 				{
 					w: true,
 					x: false
@@ -89,7 +89,7 @@ describe('Keyboard', () => {
 			[
 				'filter is function',
 				'w key',
-				{ filter: (set: Set<string>) => set.has('w') },
+				{ filter: (set: Set<string>) => set.has('KeyW') },
 				{
 					w: true,
 					x: false
@@ -99,7 +99,7 @@ describe('Keyboard', () => {
 			[
 				'filter is array',
 				'w or b key',
-				{ filter: ['w', 'b'] },
+				{ filter: ['KeyW', 'KeyW'] },
 				{
 					w: true,
 					x: false
@@ -203,9 +203,9 @@ describe('Keyboard', () => {
 
 		it('should set value with key code', () => {
 			const keyboard = new Keyboard({
-				keyCode: true
+				keyCode: false
 			});
-			const control = keyboard.getControl('keyw');
+			const control = keyboard.getControl('w');
 
 			window.dispatchEvent(new KeyboardEvent('keydown', {
 				code: 'KeyW',
@@ -218,11 +218,11 @@ describe('Keyboard', () => {
 			keyboard.destroy();
 		});
 
-		it('should release with key code', () => {
+		it('should release with key value', () => {
 			const keyboard = new Keyboard({
-				keyCode: true
+				keyCode: false
 			});
-			const control = keyboard.getControl('keyw');
+			const control = keyboard.getControl('w');
 
 			window.dispatchEvent(new KeyboardEvent('keydown', {
 				code: 'KeyW',
diff --git a/src/devices/Keyboard.ts b/src/devices/Keyboard.ts
index 018d2e2..658711f 100644
--- a/src/devices/Keyboard.ts
+++ b/src/devices/Keyboard.ts
@@ -3,19 +3,16 @@ import boolAsNum from '../util/boolAsNum';
 import { Device, DeviceEvents, DeviceOptions } from '../Device';
 import { WildcardHandler } from 'mitt';
 
-/*
-todo:
-Emit 'change' event only to controls relevant to changed key.
-Currently, we emit to every control, which is ineffecient.
-*/
-
 export interface KeyboardDeviceOptions extends DeviceOptions {
 	/**
 	 * Optionally use layout-independent Key Code instead of
-	 * key value string. (default: `false`)
+	 * key value string. (default: `true`)
 	 *
 	 * Key Codes:
 	 * https://www.w3.org/TR/uievents-code/#code-value-tables
+	 *
+	 * If false, use key values:
+	 * https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key/Key_Values
 	 */
 	keyCode?: boolean;
 }
@@ -23,7 +20,7 @@ export interface KeyboardDeviceOptions extends DeviceOptions {
 export interface KeyboardGetControlOptions extends Omit<ButtonInputControlOptions, 'device' | 'children'> {
 	/**
 	 * filter may be one of the following:
-	 * - string: [name of key](https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key/Key_Values) on the keyboard to respond to
+	 * - string: name of code (or key value)
 	 * - array of strings: responds to any of the keys in the array
 	 * - function: a callback that gets called with a Set of active key names and
 	 * is expected to return a boolean, whether or not to respond to the keyboard event.
@@ -84,18 +81,20 @@ export default class Keyboard extends Device<KeyboardEvents> {
 
 		let destroyed = false;
 		let enabled = false;
-		const { keyCode = false } = keyboardOptions || {};
+		const keyCode = keyboardOptions?.keyCode !== false;
 
 		const keysDown = new Set<string>();
 
 		const onKeyDown = (evt: KeyboardEvent) => {
-			const key = (keyCode ? evt.code : evt.key).toLowerCase();
+			const key = keyCode ? evt.code : evt.key;
 			keysDown.add(key);
+			keysDown.add(key.toLowerCase());
 			this.emit('change');
 		};
 		const onKeyUp = (evt: KeyboardEvent) => {
-			const key = (keyCode ? evt.code : evt.key).toLowerCase();
+			const key = keyCode ? evt.code : evt.key;
 			keysDown.delete(key);
+			keysDown.delete(key.toLowerCase());
 			this.emit('change');
 		};