Hosted iFrame Tokenizer

The following entries describe changes to the Hosted iFrame Tokenizer and documentation.

Visit and click subscribe to updates to receive important release and status notifications.

Date Updated: 3/6/2020

The following updates have been deployed only to the UAT environment on 3/6/2020, and will be deployed to the production environment at a future date.

URL Parameter Validation

This update includes additional validation to ensure that integrated iFrames are coded following standard best practices. Specifically, it is important that all special characters (including curly braces {} )provided within the iFrame URL parameters are properly URL-encoded, as described in iFrame Styling.

Failure to properly encode the URL string will result in iFrame display and rendering issues.

Additional CSS Support

The css parameter now supports custom colors for placeholder text, as well accepting CSS3 media queries for responsive design.

All arguments to the css parameter must be URL-encoded.

New Optional Parameters

The following optional parameters are new in this release:

ParameterDefault ValueDescription


2000Controls the maximum character limit for the card number field.

Note: Do not set cardinputmaxlength if using a USB card reader.

A string value to be used as alternative labels for each month in the drop-down list.

The alternative label for each month is separated by a hyphen, starting with the 1st month and ending with the 12th month.

Note: The alternative labels are used only when usemonthnames is true.
If true, the card number field ignores non-numeric values.


falseIf true, the first 2 digits of the card number are masked.

Support for iOS AutoFill Feature

Selecting the Card Number input field now triggers the native AutoFill feature on iOS devices when using Safari. This allows users to enter card data by selecting a card stored in the Wallet, or by using the device's camera scan a physical card.

Note: The ability to store or save card details in the browser remains disabled.

Additional Character Support for Placeholder Values

The maximum character limit for the placeholder parameter has been increased to 60 characters.

Support for the following accented and special characters has been added: Á, É, Í, Ñ, Ó, Ú, Ü, à, á, â, ä, ã, ā, ç ,è, é, ê, ē, í, î, ī, ñ, ó, ô, ö, ō, õ, ú, û, ü, ū, ß, ё, й, ъ, ы, э, щ.

Date Updated: 8/13/2019

This release includes the following updates:

Support for CVV and Expiry Fields

The iFrame Tokenizer now supports fields for capturing the CVV and Expiry values and storing these values in the token. Additionally, these fields can contain placeholder values.

See Examples for sample implementations including the CVV and Expiry fields.

The following URL parameters have been added to support this feature:



BooleanIf true, includes two drop-down selectors to specify the expiration month (MM) and Year (YYYY).
useexpiryfieldBooleanIf true, uses displays entry fields instead of drop-down selectors.

The Month field supports 2-digit month values from 1-12 (including support for leading zeros for single-digit months, for example "01").

The Year field supports a 4-digit year value within the next 20 years (including the current year).
usemonthnamesBooleanIf true, displays Month names instead of numbers.


BooleanIf true, includes a field to enter the Cardholder Verification Value (CVV).


  • If usecvv is true, the CVV must be provided to initiate the tokenization request.
  • CVV is not masked. This value remains in clear text.

Controls the orientation of the elements within the iFrame.

Supported values are:

  • default - the default orientation, used if no value is passed for this parameter.
  • horizontal 
  • vertical 
  • custom 
cardlabelNControls the text inside the label for the card number field.

This label is only present when either useexpiry or usecvv are true.
expirylabelNControls the text inside the label for the expiration date selectors.

The label is only present when useexpiry is true.
cvvlabelNControls the text inside the label for the CVV field.

The label is only present when usecvv is true.
placeholdercvvNA placeholder value to display in the CVV field.

The placeholder value must be a 3 or 4-digit numeric value.
placeholdermonthNA placeholder value to display in the Month field, in the format MM.
placeholderyearNA placeholder value to display in the Year field, in the format YYYY.

Support for Screen Readers

Title tags have been added to the Card Number, Expiry, and CVV fields to enable compatibility with screen reader applications. These fields are now tagged with titles, which can be understood and read by screen reader applications for users with vision impairments.

The default title values are:

  • Credit Card Number - "Credit Card Number"
  • Expiry Month - "Expiration Month"
  • Expiry Year - "Expiration Year"
  • CVV - "Card Verification Value"

You can use the following URL parameters to customize the default titles:

cardtitleANA meaningful custom title for the card number field.
expirymonthtitleANA meaningful custom title for the expiry month field.
expiryyeartitleANA meaningful custom title for the expiry year field.
cvvtitleANA meaningful custom title for the cvv field.

New Field IDs

The following Field IDs have been added in this release:

iFrame Element


Card Number Labelcccardlabel
Card Number Fieldccnumfield
Expiry Labelccexpirylabel
Expiry Month Dropdownccexpirymonth
Expiry Year Dropdownccexpiryyear
Expiry Month Fieldccexpiryfieldmonth
Expiry Year Fieldccexpiryfieldyear
CVV Labelcccvvlabel
CVV Fieldcccvvfield

Clear Fields when Modified

After a token is returned, if a user modifies any field on the form, all fields are cleared and must be re-entered before a new tokenization request can be made.

Date Updated: 6/25/2019

This release includes the following updates:

New fullmobilekeyboard URL Parameter

The iFrame Tokenizer includes a new fullmobilekeyboard URL parameter to allow users to enter a forward slash (/) when entering an ACH routing/account number string.

Card Expiry Returned for for IDTECH USB Card Readers

The iFrame Tokenizer response message now includes the expiry when you use a supported IDTECH USB card reader device (IDTECH SREDkey or IDTECH SecuRED) to capture card data. The expiry and name on card (if available) are captured and stored in the data associated with the token.

Additional CSS Parameters

The following CSS parameters are now whitelisted for use with the iFrame Tokenizer:

  • appearance: 
  • -moz-appearance:
  • -webkit-appearance: