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CreditCard - brought to you by Lot18 ( www.Lot18.com ) CreditCard entry and edit class with a really nice GUI based on the original design by Square (see a review of it here: http://functionsource.com/post/beautiful-forms). This entry form has the following properties: - accepts MC, Visa, AMEX, Discover, and Diners Club (USA). - uses Luhn code tests on the number so that minor entry errors are flagged - a user cannot proceed without entering a correct set of digits - once four digits are entered, it creates correctly spaced placeholders so that a user knows exactly how many digits they need to enter - after all digits are entered, it scrolls to a different view where the user sees the last four digits, and can enter the month/year and CCV - for newly entered credit cards, the user can flick the view to see the full number, then back again to the expiration date and CCV - the delete key properly skips white space - in edit mode, the view accepts just the last 4 digits, allowing the user to update the expiration date and CCV (demo program does not exercise this) - the current project uses a LED font found on the web; at one time the project worked with Courier but has not been tested with it lately. - currently targetted to iOS 4.3, and uses ARC This code will be used in an upcoming Lot18 iPhone app, and was developed by David Hoerl. It is made available with a BSD license: /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * This file is part of CreditCard -- an iOS project that provides a smooth and elegant * means to enter or edit credit cards. It was inspired by a similar form created from * scratch by Square (https://squareup.com/). To see this form in action visit: * * http://functionsource.com/post/beautiful-forms) * * Copyright 2012 Lot18 Holdings, Inc. All Rights Reserved. * * * Redistribution and use in source and binary forms, with or without modification, are * permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this list of * conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, this list * of conditions and the following disclaimer in the documentation and/or other materials * provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY Lot18 Holdings ''AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL David Hoerl OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */