# nav\_pin {% columns %} {% column width="33%" %} ![](/files/zVMHJIJyFLgGTL9TiHSK) {% endcolumn %} {% column %} **Description** Customer is prompted to enter PIN with accessibility feature. The customer can drag their fingers orienting themselves using the corners of the device. The screen is laid out as a virtual number pad grid. As the user drags fingers along each number, a beep is played. The beep is same regardless of the digit that the finger has been dragged to. Playing the beep allows the customer to count the number of beeps heard and using the direction in which the fingers has moved, they can decipher the digit their finger is on. Once the finger is dragged to the desired digit, the customer can select that digit by double tapping anywhere on the screen or pressing the tactile accessibility button, depending on how the accessibility mode was configured at the start. The accessibility mode has to be turned on for each transaction. If the number of PIN entry retries exceeds a configurable number, the customer will be taken to a short training for PIN entry in the accessibility mode. Refer to the purchase flow for more PIN entry details. \ **Merchant/Customer action** Customer enters the PIN using the accessibility feature. \ **Audio InstructionsInitial instructions** “Please enter your PIN. PIN pad has telephone layout with One, Two, Three at the top and Cancel, Zero, OK at the bottom of the screen. The PIN pad covers the whole screen. The screen will be blank. To find digits, start from a corner and move one finger up or down, until you hear a beep or the words, ‘Cancel’, or ‘OK’. To find additional digits, move your finger around the keypad and listen for the beeps. To select a digit, lift your finger, then tap two times using one finger on the screen and listen for the acceptance sound. If you are not sure you found the right digit, do not double tap the screen. Simply start searching from the corner again. The terminal will announce when you have entered each digit. To finish and pay, select OK at the bottom right and double tap towards the center of the screen. To abort transaction, select Cancel at the bottom left and double tap towards the center of the screen. If assistance is needed, please request merchant help in accessing the training module containing audio and written instructions.” *(please note: the description of how to submit a selected digit (tap two times… or press the accessibility button…) will depend on on how the accessibilty mode was configured at the start.)* \ **Follow-up instructions** “Zero digits entered. Please continue entering PIN, or select Cancel to abort transaction.” *(please note: the number of digits stated will correspond to the number of digits entered at the time instructions are played.)* \ **First digit selected and confirmed** “First digit entered” \ **Second digit selected and confirmed** “Second digit entered” \ **Third digit selected and confirmed** “Third digit entered” \ **Fourth digit selected and confirmed** “Fourth digit entered” **Initial instructions** **Follow-up instructions** **First digit selected and confirmed** **Second digit selected and confirmed** **Third digit selected and confirmed** **Fourth digit selected and confirmed** \ **Configuration Parameters** `Navigator.AccessibleTrainingPinFailures` - The maximum number of PIN retries after which the short training for PIN entry will start. `Navigator.DefaultVolumeLevel` - Minimum audio instructions volume level {% endcolumn %} {% endcolumns %} \--- --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.verifone.com/functional-specification/nav_pin.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.