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    On 2016-04-04 10:54, William Flynn Wallace wrote:<br>
    <blockquote
cite="mid:CAO+xQEZ7O-zCsb-+OsyCg1Nb9O5==bjX2SG-oW2UtawiMYvVTw@mail.gmail.com"
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        <div class="gmail_default" style="font-family:'comic sans
          ms',sans-serif;font-size:small;color:rgb(0,0,0)">Anders - ​<span
style="font-size:12.8px;font-family:arial,sans-serif;color:rgb(34,34,34)">The
            problem with credit card numbers is that currently we use
            security by obscurity: much of your protection comes from me
            not knowing your number, rather than restrictions on how I
            can use it. A good authentification system would make
            knowing your card number useless to me, just as me knowing
            your email address doesn't allow me to hack your mail server
            (some extra authentification needed to ensure that I don't
            forge emails from you).</span>​</div>
        <div class="gmail_default" style="font-family:'comic sans
          ms',sans-serif;font-size:small;color:rgb(0,0,0)"><br>
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        <div class="gmail_default" style="font-family:'comic sans
          ms',sans-serif;font-size:small;color:rgb(0,0,0)">OK, I'll bite
          - why don't they do that?  bill w</div>
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    </blockquote>
    <br>
    I think part of it is the extra cost of chip-and-pin machines and
    their certification, but also that people are strongly used to
    certain ways of using the cards (like signatures) that make them or
    issuing banks resist the new system. Plus that there is an issue of
    whether merchants, banks or card companies should bear the cost:<br>
    <br>
<a class="moz-txt-link-freetext" href="http://www.usatoday.com/story/money/2016/02/17/survey-adoption-chip-enabled-credit-cards-falls-behind/80453906/">http://www.usatoday.com/story/money/2016/02/17/survey-adoption-chip-enabled-credit-cards-falls-behind/80453906/</a><br>
<a class="moz-txt-link-freetext" href="http://www.bankrate.com/finance/credit-cards/why-youre-still-swiping-credit-card.aspx">http://www.bankrate.com/finance/credit-cards/why-youre-still-swiping-credit-card.aspx</a><br>
<a class="moz-txt-link-freetext" href="http://www.latimes.com/business/la-fi-1221-credit-card-technology-20131221-story.html">http://www.latimes.com/business/la-fi-1221-credit-card-technology-20131221-story.html</a><br>
<a class="moz-txt-link-freetext" href="http://www.csoonline.com/article/3047178/security/chip-and-pin-adoption-still-slow.html">http://www.csoonline.com/article/3047178/security/chip-and-pin-adoption-still-slow.html</a><br>
    <br>
    Upgrading any existing tech infrastructure is always painful. When 
    people have differing incentives it is even tougher. <br>
    <br>
    <pre class="moz-signature" cols="72">-- 
Anders Sandberg
Future of Humanity Institute
Oxford Martin School
Oxford University</pre>
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