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I'm looking into what can be done with RFID tags and I know that most RFID tags can only handle 1-2kb of data so I'm wondering if those with more experience with them will be able to inform me on my questions:
What sort of data can an RFID tag hold? By that I mean, it is the
RFID tag that holds information about the stock one tag may be used
on, or is its serial number looked up in a data base and the stock
information is accessed that way?
If I was to permanently embed some RFID tags into a static structure
would it be possible for the tag to hold its positional information
and then have my my RFID reader get that information? If not, is
there any other way I could go about doing that?
Assuming you are working with UHF ISO 18000-6C tags, those are compose with four block:
User bank
TID bank
EPC bank
Reserved bank
1) You can use the User Bank or EPC bank (not recommended) and storage there any data you want to (in hexadecimal format). IMHO, I do not recomment to write down in the EPC field, because it is destined for the CRC and PR.
2) About the position, you can save any data you want. If you just want to reply with the tag position hard coded in some memory bank, that's ok.
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Recently I have been getting a lot of spam from a shopping service I have an account on. The emails that they normally send are from "buyer-info13.g#mail.[removed].com" or "notice-buyer04.g#mail.[removed].com"
I can easily mark the sender's address as spam or automatically removed, but the 2 numbers at the end (13, or 04) change.
I was looking at search operators you can use with gmail but for some reason they do not work when I try from:("notice-buyer" OR "buyer-info"):
Is there any way I can make this filter correctly? If this does not work does regex filters work? I can easily do this with Outlook but then I would require Outlook to be running 24/7 to filter emails. Thank you.
The gmail search operators for multiple terms require brackets, not parens. Example: {from:amy from:david}.
In your case, I'd probably enter the full email address, including the domain.
Reference: https://support.google.com/mail/answer/7190?hl=en
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Can't the app include computation correction for the image displayed to a standard retinal distance? For that matter why not "correct" the image displayed per the "optics" of each user? One could use a little bit of existing hardware (eg: a bluetooth touchpad) to take the graphic inputs needed to define a "corrective/computational" reverse-Amsler grid.
Just a newbie here w/ a question and perhaps a vision/application well before VR. thanks.
The lenses are needed so you can focus on the screen when it is so close to your eyes. Moving the device further away isn't the best option, in part because it reduces the available field of view.
From oculus documentation:
The lenses in the Rift magnify the image to provide a very wide field of view (FOV) that enhances immersion
The lenses allow for a wider field of view keeping the screen size small at the same time.
See this YouTube video for a very interesting insight.
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When I enter a website, is there a way they would know that I'm using my Adblock filters to block a few images from loading/appearing?
Sure, there are a number of methods that can be used to detect the presence of an Adblock-like extension. Whether a site actually captures that data and logs it is another question.
See this SO question: How to detect Adblock on my website?
Here's a live demo: Adblock Plus detection demonstration
Generally, the technique is to write an invisible element onto the page that you know will be blocked if the user has Adblock installed, such as a JS file with the word "ad" in the title. Then, using jQuery, you can check to see if that element exists in the DOM. If not, then it's being blocked. Based on that result, you could display a message, send a PUT request to your server to log it, and so on.
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I'm interested in saving a pcap that has network layer name resolution. While it works great within Wireshark, how can I save it with the resolved names intact? Having this information would be extremely helpful for me and save me a lot of time if this is possible. I understand in the documentation that it can't be saved within the pcap file (http://www.wireshark.org/docs/wsug_html_chunked/ChAdvNameResolutionSection.html#idp390072124) but is there an alternative way to do so? Does anyone have any solutions to this?
Thanks in advance!
I haven't tried it myself, but in theory the name resolution information can/will be stored in the pcap-ng file format, which has been Wireshark's default file format since version 1.8. The old pcap file format you cite won't, but pcap-ng has a specific defined block type in its format for ip<->name resolution information.
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I have a CD‑R that I have burned some data onto. I know that the consumed storage space cannot be recovered, but is there some way to delete the data so it can't be (easily) recovered from the disk? Not just deleting filesystem entries, but actually burning out the data? My understanding of the way CD‑ROMs works is that the data is physically recorded by etching the bit pattern into a substrate layer in a way that changes the reflective properties of that layer, so one could erase the data by etching the remaining unetched bits. Could this be done, and if so, is there an existing program for accomplishing this?
CD-R is a one time use device. Once the session is closed, there is no way to append or otherwise alter the data image on the disk (to my knowledge).
With a CD-RW, this would be possible my using some type of "format" command.
Unfortunately, the only way to dispose of the data on a CD-R disk is to destroy the media itself.