2. Electronic Commerce Online Payment Systems MIS 6453 -- Spring 2006 Instructor: John Seydel, Ph.D.

3. Agenda More on online security: general comments and demonstrations eMail guidelines for ecommerce firms Discussions of online payment systems Sharon Taylor team Sharon Taylor Additional comments, demonstrations, etc. Some review questions If time, some web page exercises and demonstrations: Review of bulleted lists Another look at client-side scripting HTML table basics

4. Online Security Comments Security “breeches” ;-} Making ecommerce secure requires encryption solutions Encryption algorithms  Example: alphabet / number  Hash functions Simple: stagger by key amount More complex: MD5 (example = page5.php)page5.php  Key: 10 Key: public (symmetric) or private (asymmetric) Strong passwords Why not offer to store passwords... ? An IDS at work: SWDSI websiteSWDSI website Keep in mind: It’s a tradeoff between security and convenience But technological developments allow both to increase

5. eMail Guidelines (for eCommerce Firms) Follow standard Netiquette Mixed case Subject lines  Meaningful (and tasteful)  Brief  Lacking special characters Other... Other Getting around spam filters Why... ? Suggestions  Avoid attachments; post to websites and use links  Limit the number of addressees  Send to one at a time

6. Now, Online Payment Systems First, a quizquiz Some guidelines to keep in mind about payment systems Can make or break a sale Must be simple to use (but not too simple) Should be universal Provide for anonymity Maintain security (of course!) Other... ? Now, let’s allow Sharon Taylor to take over...Sharon Taylor

7. PayPal: A Demonstration Getting startedstarted An example of a site using PayPalsite using PayPal

8. HTML Forms Review At lowest level, a form consists of two elements: Form   The overall container element Input data collection control   A variety of types (textboxes, checkboxes, buttons, etc.) exist and are designated by the type attribute Example: Class: Note: several other data collection controls exist

9. Review of HTML Bullet Lists Consist of two elements: Unordered list   The overall container element List item   One for each bullet point Example: My favorite schools: ASU UALR Whoever’s playing UA Lists can be nested; i.e., one list item can be another unordered list, containing its own list items (sub-bullets)

10. Some Web Page Exercises A closer look at the JavaScript example Converting Page 4 to a bulleted list Creating a table Other... ?