1.0Varsityhttps://varsity.com.cuhk.edu.hkrich600338<blockquote class="wp-embedded-content" data-secret="6Z6HkdzXUN"><a href="https://varsity.com.cuhk.edu.hk/index.php/2018/04/security-public-housing-estates/">Caught Off-guard</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://varsity.com.cuhk.edu.hk/index.php/2018/04/security-public-housing-estates/embed/#?secret=6Z6HkdzXUN" width="600" height="338" title="“Caught Off-guard” — Varsity" data-secret="6Z6HkdzXUN" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://varsity.com.cuhk.edu.hk/wp-includes/js/wp-embed.min.js </script> https://varsity.com.cuhk.edu.hk/wp-content/uploads/2018/03/IMG_3031.jpg1100733Hong Kong's public housing estates have mostly shed their shady image from the 1980s and security has improved since CCTV, intercom systems and password operated doors were installed in the 1990s. But as Varsity discovers, lax visitor registration may be compromising safety.