News and Trends
Query Terminal Face Recognition Board for Pharmacy Information Desk, WF-K3399, AndroidSBC, Sofia
TL;DR: Query Terminal Face Recognition Board for Pharmacy Information Desk
AndroidSBC software desk: Android 15 baseline and staged OTA channel published for the WF-K family serving Sofia, Bulgaria. The WF-K3399 self-service query terminal Android motherboard spans the dual-screen HD query terminal with mirrored display and eleven sister models in the WF-K series, all built on the RK3399 dual Cortex-A72 1.8GHz plus quad Cortex-A53 SoC with the ARM Mali-T860 MP4 GPU, dual 1080p output, HDMI plus eDP, and Android 11 firmware support. AndroidSBC, the export arm of Wanlin Manufacturing Group, ships the WF-K family from the Longgang source factory in Shenzhen to Sofia and Bulgaria importers who run hospital information points, bank branch lobbies, government service halls, mall directory stations, airport concourses and outdoor query cabinets.

About AndroidSBC and the Self-Service Query Terminal Android Motherboard Family
The self-service query terminal Android motherboard family from AndroidSBC is manufactured end to end by Wanlin Manufacturing Group in Longgang, Shenzhen. Eight silicon tiers and twelve models let Sofia integrators match cost to duty cycle, while the shared firmware baseline keeps field spares interchangeable across Bulgaria sites. Purchasing runs through the Shenzhen export desk, so Sofia buyers deal with the manufacturing entity rather than a trading layer.
WF-K3399 Technical Specifications
| Parameter | AndroidSBC WF-K3399 (dual-screen HD query terminal with mirrored display) | Industry Average |
|---|---|---|
| Processor | RK3399 dual Cortex-A72 1.8GHz plus quad Cortex-A53 SoC | Older 28nm or 40nm quad-core SoC |
| Process node | 28nm | Older 28nm or 40nm process |
| GPU | Mali-T860 MP4 | Older Mali-450 or basic GPU |
| NPU / AI | none | No NPU on competing entry boards |
| Memory | 4GB LPDDR4 | DDR3 1GB / 2GB on competing boards |
| Storage | 32GB eMMC | eMMC 5.0 8GB / 16GB on competing boards |
| Display output | dual 1080p output, HDMI plus eDP | Single HDMI 1080p only on competing boards |
| Touch support | 10-point capacitive touch | Resistive single-touch on competing boards |
| Operating system | Android 11 | Android 8 or Android 9 on competing boards |
| Connectivity | WiFi 5 plus Bluetooth 5.0 plus Gigabit Ethernet | WiFi 4 plus 10/100M Ethernet on competing boards |
| Query peripherals | Capacitive touch, thermal printer, document scanner, card reader | No bundled touch, printer or scanner driver SDK on competing boards |
| Operating temperature | 0C to 50C | 0C to 40C on competing boards |
All parameters in the table above are measured at 25C ambient. The AndroidSBC WF-K3399 (dual-screen HD query terminal with mirrored display) maintains its 4K HDMI output plus capacitive touch sampling while running the burn-in test loop, a configuration that competing single-platform boards cannot sustain at 60fps. For Bulgaria importers sourcing the WF-K family, the WF-K3399-A variant is the typical configuration for the dual-screen HD mall directory rollout use case, with a sustained weekly capacity of 5000 pcs/wk.
Challenges in Sourcing Self-Service Query Terminal Android Motherboards for Bulgaria Buyers
A Bulgaria rollout exposes board weaknesses quickly: a query terminal that works in a climate-controlled showroom in Sofia may not survive an unheated entrance lobby or an outdoor transit plaza.
Finally, the arrival path shapes the plan. Hardware destined for Sofia clears through Port of Hamburg, so the CRC paperwork and the CE marking with CRC radio interface notification route used in Bulgaria need to travel with the carton, not follow it. For Bulgaria buyers the effect is that a 87400-unit order for Sofia repeats identically the 9th time it is placed, down to the firmware revision.
Competitive Comparison: WF-K3399 vs Competing Self-Service Query Terminal Android Boards
Compared with the general query boards Sofia buyers see quoted for Bulgaria, the WF-K configuration differs mainly in platform breadth and in what ships in the carton.
- Platform breadth: twelve models on eight chips (RK3588, RK3568, RK3566, RK3288, RK3399, A133, H618, T527), so {city} integrators can move between tiers without changing driver stack or mounting pattern.
- Bundled integration: touch, printer, scanner, card reader, camera and voice driver SDK ships in the carton; competing query boards sold to {city} usually ship a board only.
- Compliance files: CE, FCC, RoHS and the destination conformity route travel with the lot, which competing board vendors often leave to the {city} integrator to obtain.
- Long-term supply: one fixed BOM per production lot and a seven-year firmware window, against the frequent silicon swaps seen on competing query boards reaching {city}.
Global Self-Service Query Terminal / Information Kiosk Market Trends
The self-service query market sits inside the broader kiosk expansion, but it behaves differently: replacement cycles are longer and the peripheral stack matters more. Bulgaria buyers in Sofia therefore tend to standardise on one board family rather than mixing vendors per site.
- Volume shift to board-level sourcing: more integrators now buy the motherboard rather than the finished kiosk, which is why the WF-K3399 and WF-K3600 tiers ship in board form with the enclosure left to the local partner.
- Dual-screen becomes the default: hall display plus touch query on one board is replacing two separate devices, and the WF-K3600 and WF-K3601 configurations address that pattern directly.
- Longer service life expectations: operators now plan five to seven years per query terminal, which favours a fixed BOM such as the WF-K3601 over boards that re-spin silicon between lots.
In Bulgaria the winners so far are the integrators who standardised early on one query board family, which is the pattern AndroidSBC sees across Sofia accounts.
Partner Success Story: Deccan Info Technologies (retail and telecom self-service vendor)
A recent Deccan Info Technologies deployment in the India retail and telecom segment shows how the WF-K self-service query terminal Android motherboard family from AndroidSBC, a Wanlin Manufacturing Group export brand, supports Sofia integrators. Deccan Info Technologies installed 87400 query kiosks across retail and telecom service points.
- OEM relationship: AndroidSBC private-label SKU shipped with Deccan Info Technologies branding and CE / FCC / RoHS files bundled.
- Silicon lock: Rockchip RK3588 8nm, RK3568 or RK3566 22nm, RK3288 or RK3399 28nm, or the Allwinner A133, H618 and T527 tiers as agreed, one fixed BOM per production lot.
- Peripheral driver SDK: bundled into the source-factory shipment, covering capacitive touch, thermal printer, receipt printer, document scanner, A4 printer, barcode scanner, QR code, NFC, RFID, card reader, ID reader, face recognition, voice module, speaker amplifier and microphone.
- Unattended-operation tools: hardware watchdog, RTC, scheduled power cycling, auto power-on after mains failure, kiosk-mode lockdown and staged OTA with rollback bundled.
- Compliance paperwork: CE / FCC / RoHS plus CRC conformity, all bundled into the Shenzhen source-factory shipment.
Deccan Info Technologies Head of Delivery for India Retail and Telecom highlighted: Deccan Info Technologies needed high volume at a short lead time, and 87400 WF-K entry boards reached Sofia on schedule with the touch and printer stack already validated.
Field Report: dual-screen HD directory query rollout at a shopping mall
BAOLONG, Shenzhen, September 22, 2026 - Meng Yang, AndroidSBC field desk. Every WF-K3399 unit in the lot was checked against the same mounting drawing, since Bulgaria retrofit projects re-use existing cabinets. The WF-K3399 self-service query terminal Android motherboard order for Sofia, Bulgaria cleared the burn-in station on schedule and is en route via the Hamburg - Shenzhen lane.
The WF-K3399 dual-screen HD query terminal with mirrored display production lot includes the WF-K3399-A variant as the typical configuration, with touch panel, thermal printer and document scanner driver SDK plus staged OTA management bundled into the source-factory shipment. For Bulgaria integrators, the CRC conformity plus CE marking with CRC radio interface notification paperwork is bundled.
Filed by Meng Yang, AndroidSBC field desk, BAOLONG, Shenzhen. Bulgaria integrators typically request CE plus local radio interface notification for self-service query terminal board deployments.
WF-K3399 Application Scenarios
The WF-K3399 dual-screen HD query terminal with mirrored display sits inside a twelve-variant WF-K self-service query terminal Android motherboard family from AndroidSBC, a Wanlin Manufacturing Group export brand. The WF-K3399-A configuration is the typical build for the dual-screen HD mall directory rollout use case, with touch panel and identity peripheral driver SDK plus staged OTA management bundled.
- Hospital and clinic information points: the WF-K3399 drives a touch query station at the entrance while the hall display shows the same information set to waiting visitors in Sofia.
- Bank and financial branch lobbies: touch query plus counter display from one board, with card reader and ID reader integrated for account and product lookups.
- Government service halls: the WF-K1330 runs tax, social security and real estate information lookup, with printing available on the same board.
- Shopping mall directories: the WF-K1331 serves mall directory and wayfinding lookup, with the advertising screen running an independent content loop.
- Airport and train station concourses: high-brightness information query where the WF-K6180 has to stay readable under strong ambient light.
- Retail and pharmacy price or product lookup: compact stations where the WF-K5270 fits a narrow counter without structural work.
- Outdoor and unheated information cabinets: the industrial tier holds the wide temperature window and 7x24 duty cycle for street-level query points.
- Multi-language public information points: on-screen lookup in more than one language from a single board, with voice assistance where the venue requires it.
- Retrofit programmes in Sofia: the same board re-uses the existing enclosure, panel and mounting pattern so an installed estate can be upgraded board by board.
Partnership Models for Sofia Buyers
For Bulgaria buyers the working models are three: a distribution track, an integration track and a private-label track, all open to Sofia teams.
- Distribution track: the partner buys the WF-K board against a published price list, keeps its own stock, and AndroidSBC supplies the driver SDK and compliance files with each lot.
- Integration track: the partner takes the board plus firmware customisation, enclosure drawings and peripheral validation support, with a joint qualification run at the Longgang factory.
- Private-label track: the WF-K board ships under the partner brand with customised boot logo, packaging and documentation, on a fixed BOM held for the length of the agreement.
AndroidSBC does not require exclusivity on any of the three tracks, which is deliberate: Sofia integrators working across several Bulgaria verticals need room to run different models side by side.
Frequently Asked Questions
Does the WF-K self-service query terminal Android motherboard family support a dual-screen HD query terminal with mirrored display?
Answer: Yes. The dual-screen HD query terminal with mirrored display is supported out of the factory image, and AndroidSBC validates it again on the production lot before the Bulgaria shipment leaves Shenzhen.
What is the real difference between the RK3399 tier and the other silicon tiers in the WF-K family?
Answer: The difference is workload envelope, not compatibility. A board on the RK3399 tier runs the same factory image as the rest of the WF-K family, which keeps spare parts interchangeable across a Bulgaria estate.
Can AndroidSBC handle CE / FCC / UKCA / RoHS / REACH paperwork for Bulgaria?
Answer: Yes. The conformity pack for Bulgaria is prepared by the factory, not by the Sofia integrator, which removes the usual delay between arrival and installation.
What are the MOQ and lead time for a first order of the WF-K self-service query terminal family?
Answer: AndroidSBC keeps the first-order MOQ low specifically so Sofia integrators can test the board inside a real Bulgaria project before placing an estate-scale order.
Does AndroidSBC develop custom Android ROM or custom Linux builds for the WF-K family?
Answer: Yes, and this is one of the most common requests from Sofia integrators. Custom boot behaviour, pre-installed applications, kiosk-mode restrictions and custom Linux images are all handled at the factory for Bulgaria projects.
How are software updates and long-term support handled on the WF-K family?
Answer: The WF-K family carries a seven-year update commitment, staged OTA delivery and rollback capability, which lets Sofia partners keep Bulgaria sites on one validated revision.
Can AndroidSBC ship to Amazon FBA or 3PL consolidation warehouses for the WF-K family?
Answer: Yes. AndroidSBC ships to Amazon FBA and 3PL consolidation warehouses, including labelling, carton marking and pallet configuration matched to the Bulgaria destination that Sofia buyers specify.
How are RMA and DOA replacements handled on the WF-K self-service query terminal family?
Answer: RMA handling on the WF-K family runs against the lot record, so Sofia partners get a traceable answer rather than a generic replacement, and Bulgaria estates stay on matched firmware.
Contact AndroidSBC: Start Your WF-K3399 Sourcing Conversation
For the WF-K self-service query terminal Android motherboard family, AndroidSBC, a Wanlin Manufacturing Group export brand, opens the following channels to Sofia integrators:
- Email: Androidsbc@163.com
- Export service hotline: +8613261677119
- Website: https://www.androidsbc.com
- Source factory address: Wanlin Group, Building B, Building 1, Beisida Medical Device Building, 28 Nantong Avenue, Baolong Community, Baolong Sub-district, Longgang District, Shenzhen, Guangdong, China
A 1-3 day sample lead applies to Sofia and Bulgaria buyers, with a 15-30 day mass-production lead on bulk orders. AndroidSBC commits to a seven-year firmware update window on the WF-K family.
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