diff --git a/Cargo.lock b/Cargo.lock
index 65b7c68..a0371ba 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -314,7 +314,7 @@ dependencies = [
 
 [[package]]
 name = "card-cli"
-version = "1.6.0"
+version = "1.7.0"
 dependencies = [
  "authenticator",
  "base64 0.21.2",
diff --git a/Cargo.toml b/Cargo.toml
index 96841c5..e0c9078 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "card-cli"
-version = "1.6.0"
+version = "1.7.0"
 authors = ["Hatter Jiang <jht5945@gmail.com>"]
 edition = "2018"
 
diff --git a/src/cmd_pivsummary.rs b/src/cmd_pivsummary.rs
new file mode 100644
index 0000000..6d6c36e
--- /dev/null
+++ b/src/cmd_pivsummary.rs
@@ -0,0 +1,78 @@
+use clap::{App, ArgMatches, SubCommand};
+use rust_util::util_clap::{Command, CommandError};
+use rust_util::XResult;
+use spki::der::Encode;
+use x509_parser::parse_x509_certificate;
+use yubikey::{Certificate, YubiKey};
+use yubikey::piv::SlotId;
+
+use crate::pivutil::get_algorithm_id;
+
+pub struct CommandImpl;
+
+impl Command for CommandImpl {
+    fn name(&self) -> &str { "piv-summary" }
+
+    fn subcommand<'a>(&self) -> App<'a, 'a> {
+        SubCommand::with_name(self.name()).about("PIV subcommand")
+    }
+
+    fn run(&self, _arg_matches: &ArgMatches, _sub_arg_matches: &ArgMatches) -> CommandError {
+        let mut yk = opt_result!(YubiKey::open(), "YubiKey not found: {}");
+        success!("Name: {}", yk.name());
+        information!("Version: {}", yk.version());
+        information!("Serial: {}", yk.serial());
+        match yk.chuid() {
+            Ok(chuid) => information!("CHUID: {}",chuid.to_string()),
+            Err(e) => warning!("CHUID: <none> {}", e),
+        }
+        match yk.cccid() {
+            Ok(cccid) => information!("CCCID: {}",cccid.to_string()),
+            Err(e) => warning!("CCCID: <none> {}", e),
+        }
+        match yk.get_pin_retries() {
+            Ok(pin_retries) => information!("PIN retries: {}",pin_retries),
+            Err(e) => warning!("PIN retries: <none> {}", e),
+        }
+
+        match yk.piv_keys() {
+            Ok(keys) => {
+                information!("Found {} PIV keys", keys.len());
+            }
+            Err(e) => failure!("Get PIV keys failed: {}", e)
+        }
+
+        for slot in yubikey::piv::SLOTS {
+            print_summary_info(&mut yk, slot).ok();
+        }
+        Ok(None)
+    }
+}
+
+fn print_summary_info(yubikey: &mut YubiKey, slot: SlotId) -> XResult<()> {
+    let slot_id: u8 = slot.into();
+    let cert = match Certificate::read(yubikey, slot) {
+        Ok(c) => c,
+        Err(e) => {
+            warning!("Slot: {:?}, id: {:x}, certificate not found",  slot, slot_id);
+            return simple_error!("error reading certificate in slot {:?}: {}", slot, e);
+        }
+    };
+    let buf_vec = cert.cert.to_der()?;
+    let buf: &[u8] = buf_vec.as_ref();
+    if buf.is_empty() {
+        warning!("Slot: {:?}, id: {:x}, certificate buffer empty",  slot, slot_id);
+    } else {
+        let slot_id: u8 = slot.into();
+        let algorithm_id = get_algorithm_id(&cert.cert.tbs_certificate.subject_public_key_info)
+            .map(|aid| format!("{:?}", aid))
+            .unwrap_or_else(|e| format!("Error: {}", e));
+        let cert_subject = match parse_x509_certificate(buf) {
+            Ok((_rem, cert)) => cert.subject.to_string(),
+            _ => cert.cert.tbs_certificate.subject.to_string(),
+        };
+        success!("Slot: {:?}, id: {:x}, algorithm: {}, subject: {}",  slot, slot_id, algorithm_id, cert_subject);
+    }
+
+    Ok(())
+}
diff --git a/src/main.rs b/src/main.rs
index 1235432..5bec406 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -25,6 +25,7 @@ mod cmd_pgpcardsign;
 mod cmd_pgpcarddecrypt;
 mod cmd_pgpcardmake;
 mod cmd_piv;
+mod cmd_pivsummary;
 mod cmd_pivmeta;
 mod cmd_pivrsasign;
 mod cmd_pivecdh;
@@ -70,6 +71,7 @@ fn inner_main() -> CommandError {
         Box::new(cmd_pgpcarddecrypt::CommandImpl),
         Box::new(cmd_pgpcardmake::CommandImpl),
         Box::new(cmd_piv::CommandImpl),
+        Box::new(cmd_pivsummary::CommandImpl),
         Box::new(cmd_pivmeta::CommandImpl),
         Box::new(cmd_pivrsasign::CommandImpl),
         Box::new(cmd_pivecdh::CommandImpl),