EZ Sign NFC Model – Frequently Asked Questions (FAQ)
Before You Get Started
If your device doesn’t update properly, it may not be a defect.
In many cases, update positioning or environmental factors can affect performance.
Before contacting customer support, please check the following:
Update Time
2-color models: approx. 2–3 seconds
4-color models: approx. up to 30 seconds
*Note: 4-color models take longer to update. Moving the device during the process may cause errors.
Smartphone Positioning
Place your smartphone’s NFC antenna close to the center of the device and keep it still until the update is complete.
If it doesn’t respond, try to slightly adjust the position.
Cases & Metal Surfaces
Thick phone cases, magnetic accessories, or placing the device on metal surfaces may interfere withNFC communication.
Please remove any accessories and try again away from metal surfaces.
If the issue persists, please refer to the FAQ below.
1. Updates and Erorrs
Q1. What devices can be used to update the display?
A. EZ Sign can be updated using NFC (Type-A) compatible smartphones (iOS / Android).
It can also be updated via a Windows PC using an NFC reader (recommended: ACR1552U USB NFC Reader IV).
Note: Depending on the smartphone model and antenna position, NFC signal strength may vary.
If issues persist, please contact us with your device model and OS version.
Q2. How does it work without a battery?
A.EZ Sign uses e-paper technology combined with NFC communication and power supply.
Power is used only during updates via a smartphone or NFC reader, and the display is retained without consuming power afterward.
No charging, battery replacement, or wiring is required.
Q3. How long does it take to update?
A.
2-color models: approx. 2–3 seconds
4-color models: approx. 30 seconds
Please hold your device still until the update is complete.
Q4. Why are colors not displaying correctly on a 4-color model?
A. This is usually caused by a communication error during updating. Please check:
1. A 4-color template or data is selected
2. The NFC antenna is aligned with the center
3. The device is not moved during the update
4. The device is not placed on metal or near magnets
If the issue persists, please contact us with your device details.
Q5. Why are colors inverted or incorrect?
A. This may also be caused by communication issues. Please check positioning, movement, and environmental conditions.
Also confirm that the background color is not set to “transparent.”
Q6. The update doesn’t start. Is it defective?
A. Please check the following:
- NFC is enabled on your smartphone
- The phone case or magnetic accessories are removed
- The antenna is correctly positioned
- The device is not placed on metal
If the issue continues, please try another device and contact support with details.
Q7. It used to work but stopped updating. Why?
A.Changes in smartphone conditions can affect performance.
Please check:
・NFC settings
・Accessories (case, ring, magnets)
・Surface (avoid metal)
・Antenna positioning
・If needed, test with another device.
Q8. The update stops midway or doesn’t complete
A.This is usually caused by NFC misalignment or environmental interference.
Keep the device steady, remove cases, and avoid metal surfaces.
Q9. Can multiple units be updated at once?
A.Currently, updates are performed one device at a time via NFC.
For multiple units, reuse saved templete designs ansave as JPEG or JNG and update sequentially.
2. Product Selection
Q1. Which size should I choose (2.9” vs 4.2”)?
A.
2.9”: Compact uses (price tags, labels, inventory)
4.2”: Better visibility (signage, nameplates, displays)
Choose based on space and readability needs.
Q2. 2-color vs 4-color?
A.
2-color: Fast updates, practical use
4-color: Better visibility, color-coded communication
Q3. Single vs 6-pack?
A.
Single: Trial use (includes stand & clip)
6-pack: Bulk use (device only)
3. Usage & Environment
Q1. What are typical use cases?
A.
- Event badges
- Reception displays
- QR code signs
- Store or factory labels
Best suited for short- to mid-range viewing applications.
Q2. Can it be used outdoors?
A. IP65-rated for dust and water resistance.
Recommended for covered or semi-outdoor environments (avoid direct rain and extreme heat).
Q3. How is it installed?
A.
・Stand (tabletop)
・Clip (badges)
・Avoid metal surfaces during updates.
Q4. Will the display fade or burn in?
A. E-paper retains images without power.
Minor ghosting may occur but can be resolved by refreshing the display.
Q5. Does it have a backlight?
A. No. It uses reflective e-paper, which is easier to see in bright environments.
4. Design & App Data
Q1. Can I edit saved designs?
A. Yes. You can save templates and return to them later without recreating your design from scratch.
EZ Sign also supports saving and displaying image files (PNG/JPEG). Please note that auto-save is not available. Be sure to tap the save icon in the top-right corner during editing.
You can reopen your saved design later on a compatible model.
Q2. What types of content can be displayed?
A. Text, layouts, and images via the app.
Q3. Is it possible to display QR codes or barcodes?
A.Yes, QR codes can be displayed and scanned. The readable distance on a smartphone is similar to that of a QR code printed on standard paper POP displays.
Note: Very small QR codes or fine barcodes may be difficult to scan.
Q4. Can it display photos or gradients?
A. Not suitable for full-color photos or gradients.
Best for text, icons, and signage.
Q5. Can QR codes be displayed?
Ａ．Yes. QR and barcodes can be displayed as images.
Q6. Can anyone rewrite the display?
Any NFC-enabled device with the app can update it.
We recommend controlled access in public environments.
5. Business & Support
Q1. Bulk Orders Available?
A.Yes. Contact us for large orders and custom configurations.
Q2. Customization Options?
A. Available: frame colors, logos, accessories.
Q3. Samples Available?
A.Yes. We can provide samples based on your use case.
Q4. Warranty & Support
Ａ． Defective products under normal use are eligible for replacement.
Q5. Shipping & Documents
Ａ．Invoices, quotations, and shipping available upon request.
Q6. What info should I include when contacting support?
A6.
・Purchase source
・Order number
・Device model / OS
・Product type (size / color)
・Issue details (photos/videos)
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