🪙 COINFINITY: Track your Stack! - Stack, Scan & Organize Your Coin Collection with NFC Technology

Tired of digging through bins and tubes trying to remember what’s inside?  Can't remember where you put that  specific coin?  

COINFINITY is a modular coin stacking system for collectors — combining 3D-printed stackers, embedded NFC chips, and a mobile app that keeps track of everything.

Just tap your phone to a stacker or bin, and instantly see what coins it contains.

Whether you're storing gold, silver, or collectible rounds, COINFINITY brings order, speed, and smarts to your collection — all while staying true to the DIY spirit of 3D printing.

🧠 Tap to identify  
📦 Modular, stackable storage  
📱 Track your collection digitally, privately. 

> Coinfinity provides 10 stacker sizes, pre-printed or DIY, with full app support and open-source tools.

Each Stacker or Bin includes an NFC chip that allows you to tap your smartphone to a stacker and instantly load the contents of the storage unit on the Coinfinity App.

COINFINITY App Prototype

The Coinfinity App brings the tracking and technology side of things to life.  No longer just a static storage system.  With NFCs and the Coinfinity App, your stack becomes modernized and better!

NO DATA EVER LEAVES YOUR DEVICE!  

The app just pulls down metadata, metal prices and the upcoming Coin Library of commonly collected coins.  This helps pre-populate a list of popular coins you can add to your own collection with a click.

The Coinfinity Tracker App is Ready for Beta!  on both Android and IOS!  Check out these screenshots:

📌 WHAT I'M RAISING FUNDS FOR

I'm launching this campaign to:

• Finalize and release all 10 NFC-enabled stacker variants, supporting the most common bullion coin sizes  • Produce and ship 3 different starter kits with embedded NFC chips  
• Produce and ship 4 different bin styles with embedded NFC chips  
• Release & Expand the COINFINITY PRO mobile app with new features 

(real-time metal quotes, coin library access, ROI, portfolio charts)  

• Create and grow the open-source Coin Library, which powers a simpler tracking experience  
• Produce YouTube video content for backers and DIY customers.

❤️ WHY I CARE

As a coin collector myself, I’ve dealt with unlabeled tubes, mystery stacks, and disorganized storage. I wanted a better system — something elegant, modular, and smart.  

COINFINITY IS THAT SOLUTION.

It’s designed for collectors who want their collections to feel organized, connected, and future-ready — all while staying true to the DIY spirit of 3D printing and stacking.

Not only does coinfinity tell you WHERE a tracked item is. It can help you verify it's location without having to look through your entire stack!  Solve your own problems and share them with the world is always my model on innovation.   Hopefully you like my project!?  Will it help you?

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🧰 HOW I’LL MAKE IT HAPPEN

So far, I’ve already:

✅ Converted my own personal stack to Coinfinity Stackers and Bins.

✅ Designed and tested all 10 stacker variants  and 4 different bin types.
✅ Built a working beta of the COINFINITY Tracker App for iOS and Android.

✅ Secured the trademark for COINFINITY in the USA
✅ Validated NFC compatibility and scan performance with magnets.
✅ Launched Coinfinity.US — my store for pre-printed units and parts.
✅ Created the documentation site: CoinfinityDocs.com

✅ Created the Mobile App landing site: CoinfinityApp.com

With your support, I’ll:

• Release the full set of STL files, stackers, bins, and bases  
• Deliver starter kits with printed stackers and pre-installed NFC tags  

• Release the beta version of the Coinfinity App for IOS / Android
• Continue building out the documentation and community support tools  
• Create YouTube video content to support makers and collectors  

• Support the community through our Discord server

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👋 WHO I AM

I’m Gavin Stevens, creator of COINFINITY — a long-time maker focused on bridging physical and digital experiences. With a background in 3D design, app development, and open-source projects, I’m committed to building tools that collectors can use, enjoy, and build on.

Some of my other projects:

https://blogs.nvidia.com/blog/gavin-stevens-omniverse-developer/

Meta Cloud Explorer, instead, displays 3D representations that can be rearranged at scale. It’s one of the winning submissions for the inaugural #ExtendOmniverse contest, where developers were invited to create their own Omniverse extension for a chance to win an NVIDIA RTX GPU.

https://cointelegraph.com/news/bitphone-becomes-first-bitcoin-phone-company-skype-competitor

New service called Bitphone is attempting to reinvent and improve how we communicate by using bitcoin as low-cost infrastructure and payment method for encrypted calls

https://download.intel.com/newsroom/2021/archive/2016-03-28-press-kits-americas-greatest-makers.pdf

Won $100,000 from Intel and top 5 finish in America’s Greatest Makers! 

- PowerBobber Fishing Device

Want to follow the project or get help printing your own stackers?  
Join the community on Discord

📦 What You Can Get By Supporting this Project

Whether you're just starting out or ready to level up your whole setup, I’ve got options for you:

• NFC Tag Packs – Use these with your own tubes, bins, or whatever system you're already using. Just stick, scan, and track.

• Magnet Kits – For those printing stackers at home, I offer packs of the exact 25 mm x 4 mm ceramic magnets used in my official designs.

• Stacker Starter Packs – We offer some convenient starter packs with pre-printed, ready to go stackers!

Retail COINFINITY Starter Kits

While it is a 3D printable, DIY project at it's core.  There are a lot of collectors out there that don't have access to high-quality 3D printers that can create stackers.  I've created several “Starter Kits” that people can purchase pre-printed stackers, complete with NFC Badges and Bases.

CORE STARTER KIT – Modular Stackers & Stacker Base, Tags Included

The COINFINITY CORE STARTER KIT is the ultimate starting point for collectors with a variety of coins—gold, silver, rounds, capsules, or loose pieces. This modular bundle includes 4 essential stacker sizes, a magnetic stacker base and smart NFC features to track your collection with the COINFINITY App.

Each stacker is equipped with a 25mm NFC tag embedded in the tube, while the bin includes a press-fit tag in the badge cavity—making every component tap-to-scan ready. Organize and monitor your collection digitally with just a tap.

SILVER STARTER KIT - Modular Stackers & Stacker Base, Tags Included

The COINFINITY SILVER STARTER KIT – is built for serious silver collectors who want a clean, modular, and smart way to store, sort, and track their coins. This bundle includes everything you need to manage a growing silver collection—including stackers for rounds and Eagles, a slab bin for graded coins, a magnetic base, and NFC-enabled tracking.

Each stacker and bin includes an embedded 25mm NFC tag, allowing you to scan and view detailed coin info instantly using the COINFINITY App, available on iOS and Android. Whether you’re organizing rounds, capsules, or slabs, this kit keeps your collection organized and digitally cataloged with a tap.

The 1x4 base included in this kit features embedded magnets to align and lock your stackers and bin in place—perfect for vault trays, safes, or display cases.

GOLD STARTER KIT - Modular Stackers for Gold Storage, Tags Included

The COINFINITY GOLD STARTER KIT – is the ideal setup for collectors of fractional and full-ounce gold coins. Designed to provide both physical protection and digital tracking, this kit helps you organize your gold collection intelligently—right out of the box.

You’ll receive 4 COINFINITY stackers in a range of sizes that match popular gold or platinum denominations (from 1/10 oz to 1 oz).

Each stacker includes a 25mm NFC tag embedded in the tube or badge, enabling fast tap-to-scan functionality with the COINFINITY App, available on iOS and Android. Manage your coin data, assign notes, or log purchase history—all with a single tap.

The COINFINITY GRID

Multiple Bases can fit together and create a grid.  This is similar to Gridfinity and where the inspiration came from.  With multiple sizes of stackers a GridFinity style, universal grid was problematic.  Plus I wanted magnets.

The physical location of each tagged stacker can be logged in the Coinfinity App.  You can search for a specific item and have the app show you where it is!  The bases provide a solid, magnetic base with rubber feet to keep the stackers in place. The base can accommodate all 7 standard stacker sizes!

🎯 Stretch Goals!

If we get a large number of backers, we’ll reinvest those funds directly into developing new features and content for the Coinfinity ecosystem.