I kept the static method I’d written for having a single, unique lock and changed it to create a single, unique dispatch queue. The static method, however, introduced a new issue I’d overlooked: upon logging out of the app, the queue would persist while the code blocks it ran tried to access deallocated data. This new issue finally pushed me to use an even higher level concurrency abstraction, NSOperationQueue (see Apple’s documenation for more details). NSOperationQueues are built on top of GCD but provide several extra features, including the ability to cancel operations. Moving printer communication code to an NSOperation subclass was a small amount of extra work that paid big dividends. By storing the operation queue as an instance variable on the print controller, I was able to cancel all waiting printing and printer discovery operations and deallocate the queue itself in just a few lines of code.
If you are buying this for the Amazon Local Register payment platform, be sure to get the Ethernet version (not the USB version). This one only connects to your network and not directly to a computer.
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Square systems are primarily compatible with Ethernet or Bluetooth interface printers (depending on the tablet you are using, Android tablets with USB ports and USB On-The-Go or USB Host mode can use USB interface printers). The compatible printers for Square systems are as follows:
Versatile and relatively compact, the Epson ReadyPrint is designed to give you various placement options on cramped desks or cash registers. It also serves as a standard printer, so you can generate text-heavy documents in a miniature size.
Square Register Socket 7CI Bluetooth Cordless Hand Scanner (CHS), Socket Mobile CHS 7CI Cordless Barcode Scanner, 1D Imager, Includes Socket CHS 7CI Barcode Scanner, Two AAA NiMH Rechargeable Batteries, USB AC Charging Kit, Lanyard/Belt Clip with Retractable Tether, Dark Gray Color – CX2870-1409
This printer is fast. Thermal printers print very fast, and the internals are actually much simpler than the ones at my work. You simply open it up, drop the paper inside (yes, it’s a drop in, which makes it much easier to replace the roll once it has run out) and then feed the paper over the top.
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Print 58mm wide thermal paper, with 100km reliability TPH life. Paper Width: 58mm( -0.1mm). POS-5805DD mini thermal printer is compatible for iOS Android Windows devices, supporting BT(wireless), USB …
I have a friend who runs a small shop and knew the Esky ES-CD01 Heavy Duty RJ-12 Key-Lock Cash Drawer would be perfect for his application. This drawer was a massive upgrade to the system he had been using. He had tried other drawers with different connections and designs, however this one was really the best.
Receipts have been an important part of society since nearly the beginning of civilization. In 3200 BCE Samaria, Israel, temple offerings were an important part of the taxation system. People would write down symbols to represent the offerings they had made to their temples, and these acted as a form of receipt. Papyrus receipts from Egypt have been found that date back to the mid-1200s, recording purchases like cattle and grain. Some receipts at the time were chiseled onto stone, but these were inconvenient to carry around and cumbersome at best.
Bought this strictly to print receipts with the Amazon Local Register iPad App and card reader, as it is the only receipt printer supported at this time by that platform. (Bought it used via an Amazon re-seller; works perfectly. It was easy to set up on the network using the downloadable Windows software. Once set up, my iPad and the Amazon Local Register app found the printer and linked to it easily. I haven’t tried using any of the other options (like printing our logo or printing coupons), but for what I bought it for it works perfectly. It prints extremely fast and clearly. The cutter works well, too. It is nice that it can be mounted to a vertical surface if desired.
Features: 100% Brand new and high quality! Compared to conventional thermal receipt printer, the printer has a smaller mini body, more reliable capability, more stable printing and portable advantages…
Square Point of Sale (formerly Register) is the free point-of-sale app that gives you everything you need to run and grow your business. Accept debit and credit cards with a Square Reader for magstripe, and accept EMV chip cards and Apple Pay with the Square Reader for contactless and chip. Funds are deposited fast—see money in your bank account in one to two business days. Use your point of sale system to keep track of sales and inventory in real time, manage items and employees, and view analytics about your business. All this with no long-term contracts or surprise fees.
Barcode PrinteriPad Point of SaleBarcode ScanneriPad Barcode ScannersCash DraweriPad Cash DrawersCredit Card ReaderiPad Receipt PrintersGift Card PrintingiPad POS StandsMobile ComputeriPad POS KitsPOS SoftwareiPad POS Apps
Connect supported receipt printers, cash drawers, and bar code scanners to the Square app on the iPad. If you have any connectivity issues after following the steps below, learn how to troubleshoot your hardware.
Please note, these printers can only be used with iOS devices at this time. I don’t have a timeline for when they’ll be supported with Android devices yet. But I’ll report back when I have an update! 😀
Buy Used and Save: Buy a Used “POS Hardware Bundle for Square Stand- Cash Drawer,…” and save 30% off the $399.99 list price. Buy with confidence as the condition of this item and its timely delivery are guaranteed under the “Amazon A-to-z Guarantee”. See all Used offers.
With a print speed of 230 millimeters per second, the SNBC Serial is high-speed, efficient and eco-friendly. It’s compatible with the majority of today’s popular point of sale systems, and it’s even able to print coupons so you can reward your regular customers.
Learn More.

Drawer made from robust Steel. 1 x Cash drawer with RJ11 cable. Thermal Receipt Printer. THERMAL RECEIPT PRINTER. Pre-wired with RJ11 cable, plug for connection to receipt printers, compatible with Es…
Pos thermal printer with high speed and advanced technology. Or add greetings as well! Works with all pos softwares. easy installation and if you prefer, TPG technicians will walk you through on how t…
A cash drawer must be connected to a receipt printer to open automatically. Otherwise, you’ll need to manually open the drawer using the cash drawer key. To link your cash drawer to the Square app on your iPad, you can connect it to a supported receipt printer that has a peripheral drive connector using an interface cable. Most receipt printers, except mobile bluetooth printers, generally have a peripheral drive connector.
Connect your Square Stand with a compatible iPad and recommended hardware accessories to help run your business. Before purchasing a Square Stand, make sure you’re using a supported iPad. You can identify your iPad model on Apple’s Support site.
A simple print button on the tablet application would allow us to connect to a local or network printer and print the same form data. Why is this still impossible? Why can we still not utilize our desktop or local printers to print receipt data from the app? 
USB 58mm POS Thermal Dot Receipt Printer Set Electronic POS Cash Drawer. POS Printer Support cash drawer driving, connect the cash drawer with RJ11 Connector Cable(RJ11 cable not included). Compatib…
As a bluetooth only device, it is a bit glitchy. If you are wanting to use it with a phone/tablet only as a standalone device, look elsewhere. The miura m010 reader works great for this, though is unfortunately not available on amazon.
It has 5 bill trays, 5 coin trays and a bill entry, keeping your money organized and largely improve your working efficiency and accuracy. Electronic Cash Drawer There are 5 bill trays and 5 coin tray…
Overall, this is a great printer. I can’t complain about the price because for similar thermal printers, this is relatively cheap. Any cheaper and there are issues with printing mechanics and whatnot.
To create your own bar codes and labels, you’ll need to use a third-party application. At the moment, we don’t support bar code and label printers and can’t guarantee compatibility, but many customers have success using the DYMO Label Writer 450 and labels with Square.
We are in no way affiliated with Square, Inc. Square, the Square logo, Square Register, and Square Reader, are registered trademarks or trademarks of Square, Inc. iPad​® is a trademark of Apple Inc. iPod touch®, and iPhone® are registered trademarks of Apple Inc. We are in no way affiliated with any of the brands or companies we mention in this website.

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