# SALTO Hotel Key Cards — Compatibility Guide URL: https://proudtek.com/compatibility/salto-hotel-key-cards/ Source URL: https://proudtek.com/compatibility/salto-hotel-key-cards/ Generated: 2026-03-16T01:42:30.697Z Kind: article Publisher: Proud Tek Co., Limited Author: Mia Li (Quality & Manufacturing Engineer) Published: 2026-03-14 Last Modified: 2026-06-10T18:00:00Z Reviewed By: Proud Tek Editorial Team Last Reviewed: 2026-06-10T18:00:00Z Credentials: ISO 9001:2015, ISO 14001:2015, RoHS Compliant, CE Marking, REACH Compliant Image: https://proudtek.com/landing-images/hero/compatibility-salto-hotel-key-cards.webp Image Alt: SALTO XS4 hotel lock with MIFARE DESFire and Ultralight C hotel key card compatibility ## Description Procurement-grade compatibility reference for SALTO Systems hotel lock estates. Maps the XS4 lock family (Original / Original+ / One / Mini / Locker /... ## Summary - Procurement-grade compatibility reference for SALTO Systems hotel lock estates. ## Buyer Guidance - Best for: SALTO Hotel Key Cards — Compatibility Guide supports RFID and NFC evaluation, comparison, and sourcing decisions. - Compare first: Compare SALTO Hotel Key Cards — Compatibility Guide against reader compatibility, chip family, material, and deployment environment. - What to confirm: Confirm target application, compatibility requirements, customization needs, quantity, and sample expectations before quoting SALTO Hotel Key Cards — Compatibility Guide. ## FAQ - Q: How do I identify the SALTO XS4 generation before ordering cards? A: Three indicators usually settle it: the reader-head physical form (plain XS4 Original escutcheon = Classic-era; backlit ring or visible BLE module = XS4 One, AElement Fusion or Neo BLE), the encoder at the front desk (USB PPD = legacy ProAccess SPACE; EC90ENUS or EC904B0 NCoder = current SALTO Space or KS), and the back-end build retrieved from the ProAccess SPACE console. If all three are unclear, send a current guest card sample to the supplier for an inspection read before committing to a production chip. - Q: Can I put MIFARE DESFire EV3 cards on a SALTO estate that still has XS4 Original reader heads? A: Only after a reader-head firmware uplift. XS4 Original was Classic-first; DESFire support arrived on the Original+ refresh and is standard on XS4 One, Mini, AElement Fusion, Locker and Neo BLE. Two practical paths: a Plus EV2 SKU during the migration window (Classic-compatible in SL1 mode, AES in SL3 mode), or a phased reader-head firmware update via SVN-Flex / BLUEnet before switching card stock. DESFire EV3 ships in EV2/EV1 backwards-compatible default, so an EV3 stock can serve an estate originally specified for EV2. - Q: What is the difference between SALTO Space and SALTO KS? A: SALTO Space (formerly ProAccess SPACE) is the on-premise platform; SALTO KS is the cloud-native SaaS equivalent. Both manage the same XS4 reader heads, the same Local IO Bridge encoder workflow and the same JustIN Mobile credential layer. SALTO KS requires continuous internet at the property; Space does not. The card programme assumptions carry over between the two: the chip family, the encoder model and the PMS pairing are the same; only the operating model differs. - Q: Is the 2019 ProAccess SPACE CVE cluster still a concern in 2026? A: Only if the property is still on ProAccess SPACE ≤ 5.5. The 2019 disclosure (SEC Consult SA-20191202-0; CVE-2019-19457, 19458, 19459, 19460) covered stored XSS, path traversal with database export, arbitrary file write enabling RCE, and the underlying web server running as SYSTEM. SALTO addressed the cluster in ProAccess SPACE 5.6 and has since folded the product into the SALTO Space brand. Confirm with SALTO service that any installed ProAccess SPACE has been upgraded to 5.6 or later before adjusting card stock. - Q: Should new SALTO estates still be specifying MIFARE Classic 1K cards in 2026? A: No, where the lock estate supports DESFire. Crypto-1 — the cipher used to authenticate MIFARE Classic 1K and 4K cards — has been publicly broken for over a decade and is independent of any SALTO-specific implementation. SALTO's own product literature steers new deployments towards MIFARE DESFire EV2 or EV3 with AES-128 authenticated sessions. Properties still issuing Classic stock for legacy XS4 Original locks should sequence a DESFire migration window when the reader heads are next refreshed. - Q: Will premium-material cards (1.0 mm wood or bamboo) read reliably on SALTO? A: On XS4 One, XS4 Mini, AElement Fusion and Neo BLE, yes. These reader heads are tuned for card stacks up to roughly 1.2 mm. On XS4 Original reader heads, card thickness above 0.9 mm can introduce marginal reads because the antenna resonance was tuned for standard 0.76 mm PVC. Pilot a production-thickness sample on the real door estate before ordering a full batch. - Q: What PMS systems are certified on SALTO? A: Oracle OPERA (5 and Cloud), Mews, Apaleo, Protel, SiteMinder and a long tail of regional PMS platforms are certified against SALTO Space and SALTO KS. The limiting factor is usually the SALTO-side connector version plus the Local IO Bridge on the front-desk PC, not the PMS itself. A PMS upgrade can break encoding if the SALTO connector and the bridge are not brought to a matching revision at the same time. - Q: Does SALTO support Apple Wallet and Google Wallet keys? A: Yes, on BLE-equipped XS4 reader heads (XS4 One, AElement Fusion, Neo BLE). Wallet keys require SALTO to be configured as the active credential provider in the SALTO Space wallet settings. The wallet integration is a back-end toggle, not a card-stock dependency — properties issuing Apple Wallet keys still typically maintain a physical-card baseline for accessibility, walk-ins and operational overrides. - Q: What is the difference between the PPD, EC90ENUS and EC904B0 NCoder? A: The PPD is the legacy USB / COM portable encoder used with ProAccess SPACE; it covers MIFARE Classic and Plus (SL1) only. The EC90ENUS adds Ethernet alongside USB and extends chip support to DESFire EV1/EV2, Plus EV1/EV2, Ultralight C and HID iCLASS Seos. The EC904B0 NCoder is the current SALTO desktop encoder: Ethernet + USB, built-in desktop reader, full DESFire EV3 support, and NFC bridging to the PPD for legacy workflows. New estates should standardise on the NCoder; ordering DESFire EV3 stock for a PPD-only front desk produces silent encoding failures. ## Machine Routes - JSON: https://proudtek.com/machine/compatibility/salto-hotel-key-cards.json - Text: https://proudtek.com/machine/compatibility/salto-hotel-key-cards.txt