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    10 <!DOCTYPE concept

    11   PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">

    12 <concept id="GUID-C23196E8-FDD3-4A10-9DA2-DA83A2AD49D9" xml:lang="en"><title>Applications

    13 with a user interface</title><prolog><metadata><keywords/></metadata></prolog><conbody>

    14 <p>If you are developing an application with a user interface, consider

    15 the following issues:</p>

    16 <ul>

    17 <li><p>Other applications may have access to the information that

    18 the user inputs.</p></li>

    19 <li><p>A hostile application may lure the user to enter information

    20 that belongs to another application.</p></li>

    21 </ul>

    22 <p>Password dialogs in particular should be designed so that the user easily

    23 recognizes the currently running application.</p>

    24 <section id="GUID-836A84FD-44E9-4C3F-AA50-4BC36CBA2916"><title>User input</title>

    25 <p>It is possible for the user to unintentionally enter incorrect data

    26 that can interfere with the normal operation of the application. All input

    27 should be checked and validated before processing. A one-time check may not

    28 be enough because the content of data can change during processing, so it

    29 is therefore advisable to quickly check the data every time it is used.</p>

    30 <p>The following figure shows an example of input processing phases.</p>

    31 <fig id="GUID-6C871726-D4DB-40FC-A2F8-ADDA2B9A4E9C"><title>Examples of input processing</title><image href="GUID-63AD2899-FDDC-4E3F-8876-C72EC7C194CE_d0e11012_href.png"/></fig>

    32 <p/>

    33 </section>

    34 </conbody></concept>