Why is my plastic credit card and activation code sent separately?

Capital one recently sent my plastic credit card by paper mail and it’s activation code by a separate paper mail. What security problem does this mitigate? If a rogue element has access to my mail box or home, they will have both the plastic card as well as the activation code. The only thing I can think of is that they are preventing rogue elements on their side from having access to the two information at the same time? Or is it something else?

can’t launch matlab after activation ubuntu 18.04 Licensing error: -8,523

wided@wided:/usr/local/MATLAB/MATLAB_Production_Server/R2015a/bin$ sudo ./matlab License checkout failed. License Manager Error -8 Make sure the HostID of the license file matches this machine, and that the HostID on the SERVER line matches the HostID of the license file.

Troubleshoot this issue by visiting: http://www.mathworks.com/support/lme/R2015a/8

Diagnostic Information: Feature: MATLAB License path: /home/wided/.matlab/R2015a_licenses:/usr/local/MATLAB/MATLAB_Production_Server/R2015a/licenses/licen se.dat:/usr/local/MATLAB/MATLAB_Production_Server/R2015a/licenses/license_wided_161052_R2015a.lic Licensing error: -8,523. wided@wided:/usr/local/MATLAB/MATLAB_Production_Server/R2015a/bin$

Activation of network connection failed – hotspot

Fresh install of 19.04, running alongside an installation of Windows 10 (different drives). I have an ethernet cable coming into my onboard port, which I use for my main connection. I also have the ANEWKODI wireless adapter plugged in. This device does not natively support Linux, so the drivers I am using are installed following this guide.

I am trying to set up the hotspot setting that Ubuntu offers, but it is failing. I am going into settings, navigating to “Wifi,” clicking the three dots, and clicking “Turn On Wi-Fi Hotspot.” It will bring up the following screen temporarily…

enter image description here

However, after 15-30 seconds, the following error pops up on the top of the screen, and the hotspot turns off.

enter image description here

Running lshw -c network yields this.

What I’ve tried so far:

I’ve followed the steps listed here, which recommended manually starting the network-manager process, here, which said to disable fast boot from Windows, and here, which was a reinstall of network-manager, none of which worked.

Inverting the “activation email” process

It’s fairly common for websites to send an activation email to new users, with a link or code for them to use to confirm that they do in fact own the email address they used to sign up.

This has issues, however. Most commonly, spam filters. And then there’s some email providers that don’t even have a spam folder, and just silently delete things…

But what if instead, the website requested for you to send an email to them? A handy mailto:activate@example.com?subject=CODE_HERE link can be provided so all a user has to do is hit Send.

This bypasses all the issues of spam filters “eating” the activation email, and the only downside I can really see is that people are used to activation emails so flipping the whole process around could be confusing.

Has anyone done this, or considered this, before? Am I on to something, or should I just stick with what everyone else does, despite its flaws?

Are there any updates to the DMG that describe magic item activation in the format presented in magic item compendium?

Straightforward self explanatory question really as described in the title. Magic Item Compendium presents activating magic items in this manner [Action Type] (type of action) as per page 220. Is anyone aware of an update to the DMG that describes magic items presented therein in the same format?

Run a code only on theme activation only during first activation

function clearwidgets(){   //stuff here only runs once, when the theme is activated for the 1st time }  register_activation_hook(__FILE__, 'clearwidgets'); 

And the code I am trying to execute is this:

    add_filter( 'sidebars_widgets', 'unset_sidebar_widget' );  function unset_sidebar_widget( $  sidebars_widgets ) { unset( $  sidebars_widgets[ '$  sidebar_id' ] ); return $  sidebars_widgets; } 

That means when the first time the theme is installed it should clear away all the default widget set by WordPress.

Where am I going wrong because the desired result is not achieved? Please suggest me the fix or direct me in the direction so that I can troubleshoot.