diff --git a/Supported-hardware-(smart-cards-and-USB-tokens).md b/Supported-hardware-(smart-cards-and-USB-tokens).md
index e045513..3c44b60 100644
--- a/Supported-hardware-(smart-cards-and-USB-tokens).md
+++ b/Supported-hardware-(smart-cards-and-USB-tokens).md
@@ -18,6 +18,7 @@ Supported eID cards:
 * [EstonianEid](Estonian-eID-(EstEID))
 * [PortugueseEid](Portuguese-eID)
 * [US CAC](US-CAC)
+* [UruguayanEid](Uruguayan-eID)
 
 ## Generic smart cards
 
diff --git a/Uruguayan-eID.md b/Uruguayan-eID.md
new file mode 100644
index 0000000..5d110d1
--- /dev/null
+++ b/Uruguayan-eID.md
@@ -0,0 +1,118 @@
+# Uruguayan eID (cédula de identidad)
+
+OpenSC supports the Uruguayan national electronic ID card (*cédula de identidad
+electrónica*) through the dedicated `cedulauy` card driver. The card is a
+Gemalto/Thales IAS Classic platform, exposed as a read-only synthesized PKCS#15
+card, so it works with the PKCS#11 provider on Linux, macOS and Windows with no
+card-specific configuration.
+
+Two applet versions are in circulation, both supported over the contact
+interface:
+
+* **IAS Classic v4** (2015 chip, contact only), which AGESIC labels a *hybrid*
+  card.
+* **IAS Classic v5** (2022 chip, MultiApp V5.0), which AGESIC labels a
+  *dual-interface* card. It adds a contactless/NFC interface with PIN
+  verification over PACE.
+
+Cards issued from late 2022 are the v5, earlier ones are the v4. The card reports
+its own version in the applet label, read with `GET DATA` (tag `7F30`, object
+`C0`): the ASCII string is either `IAS Classic v4` or `IAS Classic v5`. OpenSC
+does not need to tell them apart, the driver matches both batches with a single
+masked ATR (the version and batch bytes are masked out).
+
+The card is issued by the Dirección Nacional de Identificación Civil (DNIC) of
+the Ministry of the Interior. The surrounding digital-identity infrastructure is
+run by [AGESIC](https://www.gub.uy/agencia-gobierno-electronico-sociedad-informacion-conocimiento).
+
+> **Note:** support is currently in the `master` branch and will ship in the
+> next OpenSC release. Until then, build OpenSC from source.
+
+Resources:
+
+* Official digital-identity information: [AGESIC](https://www.gub.uy/agencia-gobierno-electronico-sociedad-informacion-conocimiento).
+* [firmauy](https://github.com/carlosplanchon/firmauy): a third-party command-line
+  tool to sign and verify PDF (PAdES), XML (XAdES) and arbitrary files
+  (CAdES/.p7s) with the cédula over PKCS#11, with local certificate-chain
+  validation up to the Uruguayan national root.
+
+## Card capabilities
+
+* **Interface:** contact (ISO 7816) on both v4 and v5. The contactless/NFC
+  interface (PIN over PACE), present only on the v5 (2022) card, is not supported
+  yet.
+* **Signing:** a single RSA-2048 key with *sign* and *non-repudiation* usage. The
+  signature is computed on-card (`MSE:SET DST`, then `PSO:HASH` and `PSO:CDS`),
+  with SHA-256 as the algorithm used in practice.
+* **Certificate:** the signing certificate is readable without a PIN.
+* **Identity data:** the document number, biographic data, cardholder photo and
+  MRZ are exposed as PKCS#15 data objects, readable without a PIN.
+* **PIN:** a single global user PIN protects the signing key.
+
+## Example
+
+Reading the card structure with `pkcs15-tool` (cardholder name, serial number and
+the identity data-object contents redacted, they are personal data):
+
+```console
+$ pkcs15-tool -D
+Using reader with a card: ACS ACR 38U-CCID 00 00
+PKCS#15 Card [CARDHOLDER NAME]:
+    Version        : 0
+    Serial number  : <redacted>
+    Manufacturer ID: (null)
+    Flags          :
+
+PIN [PIN]
+    Object Flags   : [0x00]
+    ID             : 01
+    Flags          : [0x30], initialized, needs-padding
+    Length         : min_len:4, max_len:12, stored_len:12
+    Pad char       : 0x00
+    Reference      : 17 (0x11)
+    Type           : ascii-numeric
+
+Private RSA Key [Clave de Firma]
+    Object Flags   : [0x01], private
+    Usage          : [0x204], sign, nonRepudiation
+    Access Flags   : [0x1D], sensitive, alwaysSensitive, neverExtract, local
+    Algo_refs      : 0
+    ModLength      : 2048
+    Key ref        : 1 (0x01)
+    Native         : yes
+    Auth ID        : 01
+    ID             : 01
+
+X.509 Certificate [Certificado de Firma]
+    Object Flags   : [0x00]
+    Authority      : no
+    Path           : a00000001840000001634200::b001
+    ID             : 01
+
+Data object 'Numero de documento'
+    applicationName: Numero de documento
+    Path:            3f0070007001
+    Data (12 bytes): <document number, redacted>
+
+Data object 'Datos biograficos'
+    applicationName: Datos biograficos
+    Path:            3f0070007002
+    Data (103 bytes): <names, nationality, dates, place of birth, redacted>
+
+Data object 'Fotografia'
+    applicationName: Fotografia
+    Path:            3f0070007004
+    Data (10164 bytes): <JPEG portrait, redacted>
+
+Data object 'MRZ'
+    applicationName: MRZ
+    Path:            3f007000700b
+    Data (93 bytes): <machine-readable zone, redacted>
+```
+
+## Notes
+
+* The ATR differs between card batches (the applet version and batch bytes), so
+  the driver matches it with a mask.
+* The identity data objects are readable without authentication by design, since
+  the same data is printed on the card itself.