Smart Tags
Product Overview
Battery-free and battery-powered E-Ink NFC smart tags for price labels, asset ID, shelf displays, and digital signage.
What is an HPzenAi Smart Tag?
HPzenAi Smart Tags are E-Ink NFC-enabled display tags that update wirelessly by tapping an NFC-enabled smartphone running the HPzenAi app. The E-Ink display is bistable — it retains the displayed image indefinitely without any power draw. Battery-free models harvest energy directly from the NFC field of the updating smartphone, requiring no battery, no charging, and no wiring. The rechargeable billboard model uses a built-in 3.7V LiPo battery to drive a larger display refresh.
Highlights
- NFC Wireless Update: Tap an NFC-enabled smartphone to update the display in 1–3 seconds — no app pairing or Wi-Fi needed
- Battery-Free Operation: Keychain, ID card, and shelf tag models harvest all update energy from the NFC field — no batteries ever
- Bistable E-Ink Display: Image persists indefinitely without power — zero standby consumption and no display fade over time
- Versatile Content: Display prices, QR codes, names, product details, shelf labels, or bulletin board content from the HPzenAi app
Product Description
HPzenAi Smart Tags use E-Ink (electronic ink) display technology that renders sharp, paper-like images visible in any lighting condition including direct sunlight. Updates are delivered via NFC from the HPzenAi app — the phone's NFC field provides both the data and the energy needed to refresh the display on battery-free models. The rechargeable billboard model (HPZ-ST-BILLBOARD-DISPLAY-1) uses a built-in LiPo battery to power its larger display and has an extended NFC range of up to 10 cm.
| Attribute | Detail |
|---|---|
| Display Technology | E-Ink (electronic ink) — bistable, paper-like appearance |
| Update Method | NFC tap from HPzenAi app on NFC-enabled smartphone |
| Update Speed | 1–3 seconds per update |
| Battery-Free Models | ETAG-KEY-1, ETAG-ID-1, ETAG-STORE-1 — no battery, no charging |
| Battery Model | HPZ-ST-BILLBOARD-DISPLAY-1 — 3.7V LiPo, ~6 months per charge |
| Battery Charging | USB-C port on billboard model |
| NFC Range | 3–5 cm (battery-free models) · up to 10 cm (billboard model) |
| Display Retention | Indefinite — image persists without any power |
| Smartphone Requirement | NFC-enabled iOS 13+ or Android 6+ |
| Certifications | CE, RoHS |
Applications & Use Cases
HPzenAi Smart Tags eliminate paper labels and reduce the labour cost of manual price and content updates across retail, warehouse, healthcare, and office environments.
| Application | Description |
|---|---|
| Retail Price Labels | Update product prices instantly across shelf edges without paper — ETAG-STORE-1 suits standard supermarket shelf rails |
| Asset Identification | Attach ETAG-KEY-1 or ETAG-ID-1 to equipment, tools, or containers for scannable NFC asset ID tags |
| Staff ID Cards | ETAG-ID-1 displays staff name, role, and photo with QR code — updates instantly when roles change |
| Warehouse Management | ETAG-STORE-1 on rack uprights shows bin location, SKU, and stock count — updates on every pick or replenishment |
| Bulletin Boards | HPZ-ST-BILLBOARD-DISPLAY-1 displays notices, menus, timetables, or announcements on walls without cabling |
| Hospitality & Hotels | Room number, guest name, or menu display on doors and service counters — updated from the front desk app |
Available Models
All models update via NFC from the HPzenAi app. Battery-free models require no maintenance. The billboard model recharges via USB-C approximately once every six months.
Series and Models
Keychain Tag
ETAG-KEY Series
- ETAG-KEY-1:
Smart ID Card
ETAG-ID Series
- ETAG-ID-1:
Shelf Display Tag
ETAG-STORE Series
- ETAG-STORE-1:
Billboard Display
HPZ-ST-BILLBOARD Series
- HPZ-ST-BILLBOARD-DISPLAY-1: