diff --git a/briar-android/res/values/strings.xml b/briar-android/res/values/strings.xml
index 1664d42482f5f921d86371f639f8d528f049af9c..63277a30795d93ee4114ee6478263c652753e151 100644
--- a/briar-android/res/values/strings.xml
+++ b/briar-android/res/values/strings.xml
@@ -7,6 +7,7 @@
     <string name="choose_nickname">Choose your nickname:</string>
     <string name="choose_password">Choose your password:</string>
     <string name="confirm_password">Confirm your password:</string>
+    <string name="name_too_long">Name is too long</string>
     <string name="password_too_weak">Password is too weak</string>
     <string name="passwords_do_not_match">Passwords do not match</string>
     <string name="enter_password">Enter your password:</string>
diff --git a/briar-android/src/org/briarproject/android/BriarActivity.java b/briar-android/src/org/briarproject/android/BriarActivity.java
index 4579f8d6a275779410302283e13e1684dc84e4ed..1d3e30b45af8aca24fa81ea9fdabd257da2f303a 100644
--- a/briar-android/src/org/briarproject/android/BriarActivity.java
+++ b/briar-android/src/org/briarproject/android/BriarActivity.java
@@ -2,6 +2,7 @@ package org.briarproject.android;
 
 import static android.content.Intent.FLAG_ACTIVITY_NO_ANIMATION;
 import static android.content.Intent.FLAG_ACTIVITY_SINGLE_TOP;
+import static android.view.inputmethod.InputMethodManager.HIDE_IMPLICIT_ONLY;
 
 import java.util.concurrent.Executor;
 import java.util.logging.Logger;
@@ -18,6 +19,7 @@ import roboguice.activity.RoboActivity;
 import android.content.Intent;
 import android.os.Bundle;
 import android.os.IBinder;
+import android.view.inputmethod.InputMethodManager;
 
 public class BriarActivity extends RoboActivity {
 
@@ -130,4 +132,9 @@ public class BriarActivity extends RoboActivity {
 			}
 		});
 	}
+
+	protected void hideSoftKeyboard() {
+		Object o = getSystemService(INPUT_METHOD_SERVICE);
+		((InputMethodManager) o).toggleSoftInput(HIDE_IMPLICIT_ONLY, 0);
+	}
 }
diff --git a/briar-android/src/org/briarproject/android/PasswordActivity.java b/briar-android/src/org/briarproject/android/PasswordActivity.java
index 0c852a05a7c4ca9b4b8ba06c8f12ef63266be18e..2ae108330b1ebe148dfb69cf25a046d4934948d9 100644
--- a/briar-android/src/org/briarproject/android/PasswordActivity.java
+++ b/briar-android/src/org/briarproject/android/PasswordActivity.java
@@ -121,8 +121,7 @@ public class PasswordActivity extends RoboActivity {
 	}
 
 	private void validatePassword(final byte[] encrypted, Editable e) {
-		if(enterPassword == null || continueButton == null || progress == null)
-			return;
+		if(progress == null) return; // Not created yet
 		// Hide the soft keyboard
 		Object o = getSystemService(INPUT_METHOD_SERVICE);
 		((InputMethodManager) o).toggleSoftInput(HIDE_IMPLICIT_ONLY, 0);
diff --git a/briar-android/src/org/briarproject/android/SetupActivity.java b/briar-android/src/org/briarproject/android/SetupActivity.java
index 2c1a0932ac507219b5bd623f37051ec460874b9c..02d9b0183f395dbd67a2e3e87dafd06166e23e5e 100644
--- a/briar-android/src/org/briarproject/android/SetupActivity.java
+++ b/briar-android/src/org/briarproject/android/SetupActivity.java
@@ -13,6 +13,7 @@ import static android.widget.LinearLayout.VERTICAL;
 import static java.util.logging.Level.INFO;
 import static org.briarproject.android.util.CommonLayoutParams.MATCH_MATCH;
 import static org.briarproject.android.util.CommonLayoutParams.WRAP_WRAP;
+import static org.briarproject.api.AuthorConstants.MAX_AUTHOR_NAME_LENGTH;
 import static org.briarproject.api.crypto.PasswordStrengthEstimator.WEAK;
 
 import java.util.Arrays;
@@ -170,11 +171,12 @@ public class SetupActivity extends RoboActivity implements OnClickListener {
 	}
 
 	private void enableOrDisableContinueButton() {
-		if(continueButton == null) return; // Not created yet
+		if(progress == null) return; // Not created yet
 		if(passwordEntry.getText().length() > 0)
 			strengthMeter.setVisibility(VISIBLE);
 		else strengthMeter.setVisibility(INVISIBLE);
-		boolean nicknameNotEmpty = nicknameEntry.getText().length() > 0;
+		String nickname = nicknameEntry.getText().toString();
+		int nicknameLength = StringUtils.toUtf8(nickname).length;
 		char[] firstPassword = getChars(passwordEntry.getText());
 		char[] secondPassword = getChars(passwordConfirmation.getText());
 		boolean passwordsMatch = Arrays.equals(firstPassword, secondPassword);
@@ -182,7 +184,9 @@ public class SetupActivity extends RoboActivity implements OnClickListener {
 		for(int i = 0; i < firstPassword.length; i++) firstPassword[i] = 0;
 		for(int i = 0; i < secondPassword.length; i++) secondPassword[i] = 0;
 		strengthMeter.setStrength(strength);
-		if(firstPassword.length == 0) {
+		if(nicknameLength > MAX_AUTHOR_NAME_LENGTH) {
+			feedback.setText(R.string.name_too_long);
+		} else if(firstPassword.length == 0) {
 			feedback.setText("");
 		} else if(secondPassword.length == 0 || passwordsMatch) {
 			if(strength < PasswordStrengthEstimator.WEAK)
@@ -193,8 +197,9 @@ public class SetupActivity extends RoboActivity implements OnClickListener {
 		} else {
 			feedback.setText("");
 		}
-		boolean valid = nicknameNotEmpty && passwordsMatch && strength >= WEAK;
-		continueButton.setEnabled(valid);
+		continueButton.setEnabled(nicknameLength > 0
+				&& nicknameLength <= MAX_AUTHOR_NAME_LENGTH
+				&& passwordsMatch && strength >= WEAK);
 	}
 
 	private char[] getChars(Editable e) {
diff --git a/briar-android/src/org/briarproject/android/contact/ConversationActivity.java b/briar-android/src/org/briarproject/android/contact/ConversationActivity.java
index 91885fcc5d9ce79acbc4d25dce4eda78ac5313ac..d097024fba8f2a73ac448ca58b1e434fae0307f8 100644
--- a/briar-android/src/org/briarproject/android/contact/ConversationActivity.java
+++ b/briar-android/src/org/briarproject/android/contact/ConversationActivity.java
@@ -6,7 +6,6 @@ import static android.view.Gravity.CENTER;
 import static android.view.Gravity.CENTER_VERTICAL;
 import static android.view.View.GONE;
 import static android.view.View.VISIBLE;
-import static android.view.inputmethod.InputMethodManager.HIDE_IMPLICIT_ONLY;
 import static android.widget.LinearLayout.HORIZONTAL;
 import static android.widget.LinearLayout.VERTICAL;
 import static android.widget.Toast.LENGTH_SHORT;
@@ -69,7 +68,6 @@ import android.os.Bundle;
 import android.text.InputType;
 import android.view.View;
 import android.view.View.OnClickListener;
-import android.view.inputmethod.InputMethodManager;
 import android.widget.AdapterView;
 import android.widget.AdapterView.OnItemClickListener;
 import android.widget.EditText;
@@ -419,9 +417,7 @@ implements EventListener, OnClickListener, OnItemClickListener {
 		createMessage(StringUtils.toUtf8(message), timestamp);
 		Toast.makeText(this, R.string.message_sent_toast, LENGTH_SHORT).show();
 		content.setText("");
-		// Hide the soft keyboard
-		Object o = getSystemService(INPUT_METHOD_SERVICE);
-		((InputMethodManager) o).toggleSoftInput(HIDE_IMPLICIT_ONLY, 0);
+		hideSoftKeyboard();
 	}
 
 	private long getMinTimestampForNewMessage() {
diff --git a/briar-android/src/org/briarproject/android/groups/CreateGroupActivity.java b/briar-android/src/org/briarproject/android/groups/CreateGroupActivity.java
index c2b6d1d1d54bc318eeff0aa4ea3f2c9eeca1d057..568788e963a95fb23fc5c06a9a32e45aba85239a 100644
--- a/briar-android/src/org/briarproject/android/groups/CreateGroupActivity.java
+++ b/briar-android/src/org/briarproject/android/groups/CreateGroupActivity.java
@@ -6,7 +6,6 @@ import static android.view.Gravity.CENTER;
 import static android.view.Gravity.CENTER_HORIZONTAL;
 import static android.view.View.GONE;
 import static android.view.View.VISIBLE;
-import static android.view.inputmethod.InputMethodManager.HIDE_IMPLICIT_ONLY;
 import static android.widget.LinearLayout.VERTICAL;
 import static android.widget.Toast.LENGTH_LONG;
 import static java.util.logging.Level.INFO;
@@ -39,7 +38,6 @@ import android.os.Bundle;
 import android.view.KeyEvent;
 import android.view.View;
 import android.view.View.OnClickListener;
-import android.view.inputmethod.InputMethodManager;
 import android.widget.Button;
 import android.widget.EditText;
 import android.widget.LinearLayout;
@@ -62,6 +60,7 @@ SelectContactsDialog.Listener {
 	private RadioButton visibleToAll = null, visibleToSome = null;
 	private Button createButton = null;
 	private ProgressBar progress = null;
+	private TextView feedback = null;
 
 	// Fields that are accessed from background threads must be volatile
 	@Inject private volatile GroupFactory groupFactory;
@@ -114,6 +113,11 @@ SelectContactsDialog.Listener {
 		radioGroup.addView(visibleToSome);
 		layout.addView(radioGroup);
 
+		feedback = new TextView(this);
+		feedback.setGravity(CENTER);
+		feedback.setPadding(0, pad, 0, pad);
+		layout.addView(feedback);
+
 		createButton = new Button(this);
 		createButton.setLayoutParams(WRAP_WRAP);
 		createButton.setText(R.string.create_button);
@@ -130,26 +134,25 @@ SelectContactsDialog.Listener {
 	}
 
 	private void enableOrDisableCreateButton() {
-		if(createButton == null) return; // Activity not created yet
-		boolean nameNotEmpty = nameEntry.getText().length() > 0;
+		if(progress == null) return; // Not created yet
+		boolean nameValid = validateName();
 		boolean visibilitySelected = radioGroup.getCheckedRadioButtonId() != -1;
-		createButton.setEnabled(nameNotEmpty && visibilitySelected);
+		createButton.setEnabled(nameValid && visibilitySelected);
 	}
 
-	// FIXME: What is this for?
 	public boolean onEditorAction(TextView textView, int actionId, KeyEvent e) {
-		validateName();
+		hideSoftKeyboard();
 		return true;
 	}
 
 	private boolean validateName() {
-		if(nameEntry.getText().length() == 0) return false;
-		byte[] b = StringUtils.toUtf8(nameEntry.getText().toString());
-		if(b.length > MAX_GROUP_NAME_LENGTH) return false;
-		// Hide the soft keyboard
-		Object o = getSystemService(INPUT_METHOD_SERVICE);
-		((InputMethodManager) o).toggleSoftInput(HIDE_IMPLICIT_ONLY, 0);
-		return true;
+		int length = StringUtils.toUtf8(nameEntry.getText().toString()).length;
+		if(length > MAX_GROUP_NAME_LENGTH) {
+			feedback.setText(R.string.name_too_long);
+			return false;
+		}
+		feedback.setText("");
+		return length > 0;
 	}
 
 	public void onClick(View view) {
@@ -159,7 +162,8 @@ SelectContactsDialog.Listener {
 			if(contacts == null) loadContacts();
 			else displayContacts();
 		} else if(view == createButton) {
-			if(!validateName()) return; // FIXME: Show feedback
+			hideSoftKeyboard();
+			if(!validateName()) return;
 			createButton.setVisibility(GONE);
 			progress.setVisibility(VISIBLE);
 			String name = nameEntry.getText().toString();
diff --git a/briar-android/src/org/briarproject/android/identity/CreateIdentityActivity.java b/briar-android/src/org/briarproject/android/identity/CreateIdentityActivity.java
index dd1357871067688b3a4375980561da6aeb53dd05..e6e1a480bce3aa787c1d2a430b8ff3768b8ba2a5 100644
--- a/briar-android/src/org/briarproject/android/identity/CreateIdentityActivity.java
+++ b/briar-android/src/org/briarproject/android/identity/CreateIdentityActivity.java
@@ -6,7 +6,6 @@ import static android.view.Gravity.CENTER;
 import static android.view.Gravity.CENTER_HORIZONTAL;
 import static android.view.View.GONE;
 import static android.view.View.VISIBLE;
-import static android.view.inputmethod.InputMethodManager.HIDE_IMPLICIT_ONLY;
 import static android.widget.LinearLayout.VERTICAL;
 import static android.widget.Toast.LENGTH_LONG;
 import static java.util.logging.Level.INFO;
@@ -37,7 +36,6 @@ import android.os.Bundle;
 import android.view.KeyEvent;
 import android.view.View;
 import android.view.View.OnClickListener;
-import android.view.inputmethod.InputMethodManager;
 import android.widget.Button;
 import android.widget.EditText;
 import android.widget.LinearLayout;
@@ -56,6 +54,7 @@ implements OnEditorActionListener, OnClickListener {
 	private EditText nicknameEntry = null;
 	private Button createButton = null;
 	private ProgressBar progress = null;
+	private TextView feedback = null;
 
 	// Fields that are accessed from background threads must be volatile
 	@Inject private volatile CryptoComponent crypto;
@@ -82,8 +81,7 @@ implements OnEditorActionListener, OnClickListener {
 			@Override
 			protected void onTextChanged(CharSequence text, int start,
 					int lengthBefore, int lengthAfter) {
-				if(createButton != null)
-					createButton.setEnabled(getText().length() > 0);
+				enableOrDisableCreateButton();
 			}
 		};
 		nicknameEntry.setId(1);
@@ -93,6 +91,11 @@ implements OnEditorActionListener, OnClickListener {
 		nicknameEntry.setOnEditorActionListener(this);
 		layout.addView(nicknameEntry);
 
+		feedback = new TextView(this);
+		feedback.setGravity(CENTER);
+		feedback.setPadding(0, pad, 0, pad);
+		layout.addView(feedback);
+
 		createButton = new Button(this);
 		createButton.setLayoutParams(WRAP_WRAP);
 		createButton.setText(R.string.create_button);
@@ -109,29 +112,35 @@ implements OnEditorActionListener, OnClickListener {
 		setContentView(layout);
 	}
 
-	// FIXME: What is this for?
+	private void enableOrDisableCreateButton() {
+		if(progress == null) return; // Not created yet
+		createButton.setEnabled(validateNickname());
+	}
+
 	public boolean onEditorAction(TextView textView, int actionId, KeyEvent e) {
-		validateNickname();
+		hideSoftKeyboard();
 		return true;
 	}
 
 	private boolean validateNickname() {
-		if(nicknameEntry.getText().length() == 0) return false;
-		byte[] b = StringUtils.toUtf8(nicknameEntry.getText().toString());
-		if(b.length > MAX_AUTHOR_NAME_LENGTH) return false;
-		// Hide the soft keyboard
-		Object o = getSystemService(INPUT_METHOD_SERVICE);
-		((InputMethodManager) o).toggleSoftInput(HIDE_IMPLICIT_ONLY, 0);
-		return true;
+		String nickname = nicknameEntry.getText().toString();
+		int length = StringUtils.toUtf8(nickname).length;
+		if(length > MAX_AUTHOR_NAME_LENGTH) {
+			feedback.setText(R.string.name_too_long);
+			return false;
+		}
+		feedback.setText("");
+		return length > 0;
 	}
 
 	public void onClick(View view) {
-		if(!validateNickname()) return; // FIXME: Show feedback
-		final String nickname = nicknameEntry.getText().toString();
+		hideSoftKeyboard();
+		if(!validateNickname()) return;
 		// Replace the button with a progress bar
 		createButton.setVisibility(GONE);
 		progress.setVisibility(VISIBLE);
 		// Create the identity in a background thread
+		final String nickname = nicknameEntry.getText().toString();
 		cryptoExecutor.execute(new Runnable() {
 			public void run() {
 				KeyPair keyPair = crypto.generateSignatureKeyPair();